Best Combination Smoke . Reviews August, 2020

Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

Search only Kidde brand name
Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

Current price: 29.57 USD

Saving: $15.42 (34%)


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Height: 5.6 Inches

Length: 1.8 Inches

Width: 5.6 Inches

Weight: 1 Pounds

Warranty: 5-year limited warranty

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected

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Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable (3-Pack, White)

Search only Kidde brand name
Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable (3-Pack, White)

Current price: 90.8 USD


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Height: 5 Inches

Length: 5 Inches

Width: 5 Inches

Weight: 0.01 Pounds

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire

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First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm, Battery Operated (4 PACK)

Search only FIRST ALERT brand name
First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm, Battery Operated (4 PACK)

Current price: 126.99 USD

Saving: $7.00 (5%)


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Weight: 2.20462262 Pounds

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm

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3 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen

Search only vitowell brand name
3 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen

Current price: 49.99 USD


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  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats

More Info

2 Pack Combination Smoke and Carbon Monoxide Detector Alarm Battery Operated Digital Display for Travel Home Bedroom and Kitchen

Search only Elvicto brand name
2 Pack Combination Smoke and Carbon Monoxide Detector Alarm Battery Operated Digital Display for Travel Home Bedroom and Kitchen

Current price: 39.99 USD


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  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit

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Kidde Intelligent Detector Alarm Battery Operated Combination Smoke & Carbon Monoxide Detector Alarm | Model KN-COSM-XTR-BA

Search only Kidde brand name
Kidde Intelligent Detector Alarm Battery Operated Combination Smoke & Carbon Monoxide Detector Alarm | Model KN-COSM-XTR-BA

Current price: 25.97 USD

Saving: $51.08 (66%)


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Weight: 0.01 Pounds

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Provides protection even during power outages when many fire and carbon monoxide incidents occur. The battery door will not close unless the batteries are properly installed.Voltage:1.3 volts
  • Low Battery Warning - The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED.
  • LEDs - Flashing green for normal operation and flashing red for alarm condition
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive. Test/Reset Button-Tests alarm circuitry and triggers the voice announcement.
  • Voice Alarm - Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. The Hush feature temporarily silences nuisance alarms.

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First Alert SCO501CN-3ST Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Location

Search only FIRST ALERT brand name
First Alert SCO501CN-3ST Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Location

Current price: 43.99 USD


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Height: 2 Inches

Length: 5 Inches

Width: 5 Inches

Weight: 0.2 Pounds

Warranty: 7 Year

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Provides protection even during power outages when many fire and carbon monoxide incidents occur. The battery door will not close unless the batteries are properly installed.Voltage:1.3 volts
  • Low Battery Warning - The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED.
  • LEDs - Flashing green for normal operation and flashing red for alarm condition
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive. Test/Reset Button-Tests alarm circuitry and triggers the voice announcement.
  • Voice Alarm - Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. The Hush feature temporarily silences nuisance alarms.
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • NOTE: Kindly refer to the user manual provided as a PDF manual in the product description section
  • One button silences a false alarm and tests the unit. Loud 85 decibel alarm
  • Features photoelectric smoke sensor and electrochemical CO sensor
  • Voice alarm gives clear indication of where the problem is located
  • Connects multiple alarms together for wireless safety network
  • Battery operated smoke and carbon monoxide alarm can be installed easily

More Info

X-Sense 10-Year Battery (Not Hardwired) Combination Smoke and Carbon Monoxide Detector Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC03

Search only X-Sense brand name
X-Sense 10-Year Battery (Not Hardwired) Combination Smoke and Carbon Monoxide Detector Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC03

Current price: 37.99 USD


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Height: 2.5 Inches

Length: 5.7 Inches

Width: 5.7 Inches

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Provides protection even during power outages when many fire and carbon monoxide incidents occur. The battery door will not close unless the batteries are properly installed.Voltage:1.3 volts
  • Low Battery Warning - The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED.
  • LEDs - Flashing green for normal operation and flashing red for alarm condition
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive. Test/Reset Button-Tests alarm circuitry and triggers the voice announcement.
  • Voice Alarm - Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. The Hush feature temporarily silences nuisance alarms.
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • NOTE: Kindly refer to the user manual provided as a PDF manual in the product description section
  • One button silences a false alarm and tests the unit. Loud 85 decibel alarm
  • Features photoelectric smoke sensor and electrochemical CO sensor
  • Voice alarm gives clear indication of where the problem is located
  • Connects multiple alarms together for wireless safety network
  • Battery operated smoke and carbon monoxide alarm can be installed easily
  • 5. EASY INSTALLATION WITH QUALITY: X-SENSE smoke carbon monoxide detector combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-SENSE carbon monoxide detector and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support
  • 4. SIMPLE TO USE: The test/silence button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will instantly alert the entire household, even those in sleep
  • 3. HIGH ACCURACY AND SENSITIVITY: X-SENSE carbon monoxide fire alarm is equipped with combination photoelectric smoke and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • 2. ALARM TYPES FOR MORE CONVENIENT: Different alarm patterns of this carbon monoxide detector and smoke alarm tell you it is either smoke or carbon monoxide is detected without checking the LCD display; smoke alarm: delivers 3 long beeps every 1. 5 seconds and the red LED flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. 8 seconds and the red LED flashes with the alarm sound
  • 1. 10-YEAR BATTERY LIFE: This combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and CO levels, even if there's a power failure; an end-of-life signal will let you know when it’s time to replace the unit for safety

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First Alert SCO500B Interconnected Wireless Battery Combination Smoke CO Voice 4 Pack

Search only First Alert brand name
First Alert SCO500B Interconnected Wireless Battery Combination Smoke CO Voice 4 Pack

Current price: 178.99 USD


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Weight: 0.01 Pounds

  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Provides protection even during power outages when many fire and carbon monoxide incidents occur. The battery door will not close unless the batteries are properly installed.Voltage:1.3 volts
  • Low Battery Warning - The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED.
  • LEDs - Flashing green for normal operation and flashing red for alarm condition
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive. Test/Reset Button-Tests alarm circuitry and triggers the voice announcement.
  • Voice Alarm - Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. The Hush feature temporarily silences nuisance alarms.
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • NOTE: Kindly refer to the user manual provided as a PDF manual in the product description section
  • One button silences a false alarm and tests the unit. Loud 85 decibel alarm
  • Features photoelectric smoke sensor and electrochemical CO sensor
  • Voice alarm gives clear indication of where the problem is located
  • Connects multiple alarms together for wireless safety network
  • Battery operated smoke and carbon monoxide alarm can be installed easily
  • 5. EASY INSTALLATION WITH QUALITY: X-SENSE smoke carbon monoxide detector combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-SENSE carbon monoxide detector and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support
  • 4. SIMPLE TO USE: The test/silence button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will instantly alert the entire household, even those in sleep
  • 3. HIGH ACCURACY AND SENSITIVITY: X-SENSE carbon monoxide fire alarm is equipped with combination photoelectric smoke and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • 2. ALARM TYPES FOR MORE CONVENIENT: Different alarm patterns of this carbon monoxide detector and smoke alarm tell you it is either smoke or carbon monoxide is detected without checking the LCD display; smoke alarm: delivers 3 long beeps every 1. 5 seconds and the red LED flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. 8 seconds and the red LED flashes with the alarm sound
  • 1. 10-YEAR BATTERY LIFE: This combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and CO levels, even if there's a power failure; an end-of-life signal will let you know when it’s time to replace the unit for safety
  • Includes Test/Silence Button - Low Battery Warning - End of Life Timer and 7-year limited warranty
  • Photoelectric smoke sensing technology and Electrochemical carbon monoxide sensor
  • Exclusive voice alarm with up to eleven programmable locations to tell you where potential danger exists
  • Interconnects with other First Alert ONELINK enabled alarms to create a wireless safety network
  • Wireless enabled battery operated combination smoke and carbon monoxide alarm

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Combination Smoke and Carbon Monoxide Detector Alarm Digital Display for Travel Home Bedroom and Kitchen 9V Battery Operated

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Combination Smoke and Carbon Monoxide Detector Alarm Digital Display for Travel Home Bedroom and Kitchen 9V Battery Operated

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  • Voice announcements - Hush Feature temporarily silences nuisance alarms with “Hush Mode Activated” and “Hush Mode Cancelled” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident, when the test/ reset button is pressed. Temperature range: 40˚F (4.4˚C) to 100˚F (37.8˚C). Voltage (volts):4.5
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note: The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in technical specification for manual.
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
  • Combined carbon monoxide and smoke alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
  • Voice alarm –Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected
  • Kidde KN-COSM-IBA Hardwire
  • Tested to the highest industry standards, meets UL safety standards
  • Includes 2 AA batteries; 7 year limited warranty
  • Simple to use silence/test button; low battery warning; Does not contain voice feature
  • Photoelectric smoke sensing technology & electrochemical CO sensing technology
  • Battery-operated combination smoke and carbon monoxide alarm
  • 5 YEARS WARRANTY
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Combo smoke detector/carbon monoxide alarm detects two threats
  • ➤Safety and 5 year Warranty: Low battery signal alarm and "end of life"warning ensures the detector can work normal. Environment friendly, without smell, radiation or harm. If any problem, contact with us without hesitation, we will reply to you asap.
  • ➤Easy Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore, very convenient to install at home or bedroom - wall mount, screws included.
  • ➤Test/Silence Button: Tests the unit for proper operation and resets the smoke and carbon monoxide alarm, Alarm Volume: Loud > 85dB(A) at 1 meters. Loud 85-decibel alarm is designed to be heard easily. Pls kindly press if false alarm.
  • ➤LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm
  • ➤ 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Provides protection even during power outages when many fire and carbon monoxide incidents occur. The battery door will not close unless the batteries are properly installed.Voltage:1.3 volts
  • Low Battery Warning - The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED.
  • LEDs - Flashing green for normal operation and flashing red for alarm condition
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive. Test/Reset Button-Tests alarm circuitry and triggers the voice announcement.
  • Voice Alarm - Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces “Fire Fire” when a smoke or fire hazard is detected and announces “Warning Carbon Monoxide” when a CO hazard is detected. The Hush feature temporarily silences nuisance alarms.
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • NOTE: Kindly refer to the user manual provided as a PDF manual in the product description section
  • One button silences a false alarm and tests the unit. Loud 85 decibel alarm
  • Features photoelectric smoke sensor and electrochemical CO sensor
  • Voice alarm gives clear indication of where the problem is located
  • Connects multiple alarms together for wireless safety network
  • Battery operated smoke and carbon monoxide alarm can be installed easily
  • 5. EASY INSTALLATION WITH QUALITY: X-SENSE smoke carbon monoxide detector combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-SENSE carbon monoxide detector and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support
  • 4. SIMPLE TO USE: The test/silence button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will instantly alert the entire household, even those in sleep
  • 3. HIGH ACCURACY AND SENSITIVITY: X-SENSE carbon monoxide fire alarm is equipped with combination photoelectric smoke and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • 2. ALARM TYPES FOR MORE CONVENIENT: Different alarm patterns of this carbon monoxide detector and smoke alarm tell you it is either smoke or carbon monoxide is detected without checking the LCD display; smoke alarm: delivers 3 long beeps every 1. 5 seconds and the red LED flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. 8 seconds and the red LED flashes with the alarm sound
  • 1. 10-YEAR BATTERY LIFE: This combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and CO levels, even if there's a power failure; an end-of-life signal will let you know when it’s time to replace the unit for safety
  • Includes Test/Silence Button - Low Battery Warning - End of Life Timer and 7-year limited warranty
  • Photoelectric smoke sensing technology and Electrochemical carbon monoxide sensor
  • Exclusive voice alarm with up to eleven programmable locations to tell you where potential danger exists
  • Interconnects with other First Alert ONELINK enabled alarms to create a wireless safety network
  • Wireless enabled battery operated combination smoke and carbon monoxide alarm
  • Battery operated device Can be easily installed and maintained without the need for an electrician.
  • Dual high stability sensors- Minimize carbon monoxide and smoke detector alarm false positive.
  • When carbon monoxide and smoke rise to alarm levels, the 85 dB alarm provides a clear, loud warning when it is discovered.
  • Understand the surrounding environment in real time - smoke detector and carbon monoxide detector Indicator lights on the face of the unit display the presence of smoke or carbon monoxide.
  • 2 in 1 smoke detector/carbon monoxide alarm, well used in the place of carbon monoxide gas leakage and fire place, well guarantee personal safety.

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