10 Best Smoke And Carbon Monoxide Detector of December 2025

• 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
• 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.
• 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
• 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.
• 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

Kidde

• 2-IN-1 PROTECTION: Equipped with both photoelectric and electrochemical CO sensors that work independently of each other; 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
• BUILT-IN 10-YEAR BATTERY: Provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries or wonder if your alarm is still functioning
• ACCURATE, RELIABLE & HIGHLY SENSITIVE: The X-Sense combination smoke and co alarm has been redesigned from the inside out; it will ensure that smoke triggers the alarm instead of interference by taking 3 separate smoke samples from the surrounding air; a full 360 ° ring of air intakes ensures complete detection with no blind spots
• LED INDICATOR: Clearly informs you of the working status of the alarm with its 3-color flashing LED indicator (green LED indicates normal operation, red LED indicates the alarm status, and yellow LED indicates a fault), ensuring the safety and security of your home 24/7
• LARGE LCD DISPLAY: Clearly displays battery level and the real-time CO levels in PPM (parts per million) taken from the surrounding air, with an updated measurement taken every 10 seconds

X-Sense

• Help keep your family safe with this battery powered smoke and carbon monoxide detector alarm
• Unit uses wireless Z wave technology to send mobile alerts if the alarm goes off, so you are aware whether you're at home or away
• Certified to work with smart home systems such as ring alarm security system, Samsung Smart things, and Nexia Home Intelligence when connected to a Z wave gateway hub (sold separately; Consult hub manufacturer to ensure compatibility with this first alert device); Not compatible with wink or Onelink
• Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam
• Electrochemical carbon monoxide sensor offers advanced detection technology
• Includes an 85 decibel horn, single test/silence button, side access to a tamper resistant battery door, and pins that lock the alarm to the mounting bracket
• 2 AA batteries (included)
• 7 year limited warranty; Meets UL217 & UL2034 standards
• 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)

FIRST ALERT

• ➤ 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
• ➤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
• ➤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.
• ➤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.
• ➤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.

vitowell

• Keep your family safe with this 3-pack of talking hardwired smoke and carbon monoxide alarms; they're equipped with voice and location, so you are alerted of the danger and where it originates from across your house
• Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 pre-programmed locations in your home
• Features electrochemical Carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms
• Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
• 10-year limited warranty; equipped with end-of-life signal chirp, so you know when it's time to replace the unit for your safety
• 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)
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

FIRST ALERT

• 10-Year Battery & 10-Year Sensor: This smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety
• Practical 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; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds
• 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
• Simple to Use: Test/Silence button 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 sound throughout your entire home, instantly alerting the entire household, even those in sleep
• Quick & Easy Installation with Guaranteed Quality: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product

X-Sense

• Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure
• Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection.
• Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
• Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
• Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy
• Rigorously tested to meet UL standards
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
• 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)

FIRST ALERT

• Combo smoke detector/carbon monoxide alarm detects two threats
• Electrochemical CO sensor alerts you to carbon monoxide danger
• Photoelectric sensor detects smoke while minimizing false alarms
• 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
• 5 YEARS WARRANTY

vitowell

• Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
• Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
• Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
• Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
• Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling
• 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety; All first alert alarms are rigorously tested to meet UL standards
• It can ship within the US except New York
• 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)

FIRST ALERT

• 【High Sensitive & Quick Responsive】Build-in electrochemical CO sensor and photoelectric smoke sensor that detects the larger particles of a smoldering fires. Instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms. It's provides the ultimate protection from two deadly threats and make your home decoration look more concise.
• 【LCD Display】Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, When the battery capacity is low, the red light flashe time at every 10 seconds, and the LCD display "Lb".
• 【Test/Silence Button】Test / Silence button enables you to test the alarm weekly, and easily to silence the alarm when false alarms occur; Alarm Volume: Loud > 85dB(A). Loud 85-decibel alarm is designed to be heard easily.
• 【Easy Installation & Widely Used】CO and smoke detector combo can easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs, No hardwired need. Used for bedroom, living room and any other area with a risk of fire danger.
• 【ENERGY SAVING】3 * 1.5V AA battery powered CO detector (not included), Low Current consumption, Ultra-long Standy time. 12 months worry-free product guarantee, please contact seller first once you have any questions.

SiDell-US