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Best Buy customers often prefer the following products when searching for co smoke detectors.

Protecting your home from fire and harmful gases is a top priority, but you can't always be there to ensure it doesn't happen. Fortunately, there are several kinds of smoke detectors available to help detect and alert you to danger. Whether you're looking for an inexpensive detector that plugs into the wall or a more advanced detector with a built-in alarm, we'll help you find the best smoke detector for your needs. Browse the top-ranked list of CO smoke detectors below along with associated reviews and opinions.

Main Results
  1. Google - Nest Protect 2nd Generation (Battery) Smart Smoke/Carbon Monoxide Alarm - White - Angle_Zoom
    Top comment

    "Great CO/Smoke detector...Thermostat plus CO Smoke"

    See all customer reviews

    Product Description

    Nest Protect Smoke and Carbon Monoxide Alarm - 2nd Generation (Battery): Nest Protect reliably detects and alerts you to the presence of smoke or carbon monoxide in your home. The alarm speaks to you in a calm, clear, human voice, telling you the location of the danger. It also provides smartphone alerts and battery status updates to help protect your home.
    See all Smoke & Carbon Monoxide Detectors
    Top comment

    "Great CO/Smoke detector...Thermostat plus CO Smoke"

    See all customer reviews

    Product Description

    Nest Protect Smoke and Carbon Monoxide Alarm - 2nd Generation (Battery): Nest Protect reliably detects and alerts you to the presence of smoke or carbon monoxide in your home. The alarm speaks to you in a calm, clear, human voice, telling you the location of the danger. It also provides smartphone alerts and battery status updates to help protect your home.
    See all Smoke & Carbon Monoxide Detectors
    See all Smoke & Carbon Monoxide Detectors
  2. First Alert - Smoke and Carbon Monoxide Alarm - Works with Ring - White - Front_Zoom
    Top comment

    "CO² + Smoke Detection...This thing can easily connect Samsung Smartthings and report alerts for CO, smoke, battery percentage. Seems to be perfectly content with LSD Ni-mh AA batteries, reporting 90% when fresh. "

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    Product Description

    First Alert ZCOMBO is a state-of-the-art wireless combination smoke and CO alarm designed to provide early warning of a fire or CO. It features a fully insect screened Photoelectric smoke sensing chamber and an electrochemical carbon monoxide sensor, an 85dB horn, a supervised 3V (2 AA batteries) power supply, utilizes one test button to setup, test and silence. This combination alarm will operate with 3rd party, certified Z-Wave devices enabled with the First Alert protocol and the basic command class required by all Z-Wave devices. First Alert ZCOMBO also includes the Smart Start feature which allows a faster and more intuitive connection of device to hub and on-boarding via use of QR code scan located on device. By the requirements of the Device Class spec, this command class does not have to be mapped to any particular functionality for this device. The alarm supports one association group with up to 1 node and sends its alarms to that group. The alarm supports configuration parameter #1, which has a size of 1, a default value of 0, and when set to 1 causes the device to send double alarm messages. Upon the detection of smoke or CO conditions, the alarm reports smoke and or CO detected to the controller. The device shall send the applicable message when the conditions are cleared. These notifications must be wrapped in the Supervision CC. The following notifications must be supported. The alarm sends a “Heartbeat” signal to hub periodically to confirm operability. It also features tamper resistant locking pins that lock alarm to the mounting bracket and battery drawer to prevent removal of battery or alarm. Designed for wall or ceiling mounting. Includes mounting anchors and screws.
    See all Smoke & Carbon Monoxide Detectors
    Top comment

    "CO² + Smoke Detection...This thing can easily connect Samsung Smartthings and report alerts for CO, smoke, battery percentage. Seems to be perfectly content with LSD Ni-mh AA batteries, reporting 90% when fresh. "

    See all customer reviews

    Product Description

    First Alert ZCOMBO is a state-of-the-art wireless combination smoke and CO alarm designed to provide early warning of a fire or CO. It features a fully insect screened Photoelectric smoke sensing chamber and an electrochemical carbon monoxide sensor, an 85dB horn, a supervised 3V (2 AA batteries) power supply, utilizes one test button to setup, test and silence. This combination alarm will operate with 3rd party, certified Z-Wave devices enabled with the First Alert protocol and the basic command class required by all Z-Wave devices. First Alert ZCOMBO also includes the Smart Start feature which allows a faster and more intuitive connection of device to hub and on-boarding via use of QR code scan located on device. By the requirements of the Device Class spec, this command class does not have to be mapped to any particular functionality for this device. The alarm supports one association group with up to 1 node and sends its alarms to that group. The alarm supports configuration parameter #1, which has a size of 1, a default value of 0, and when set to 1 causes the device to send double alarm messages. Upon the detection of smoke or CO conditions, the alarm reports smoke and or CO detected to the controller. The device shall send the applicable message when the conditions are cleared. These notifications must be wrapped in the Supervision CC. The following notifications must be supported. The alarm sends a “Heartbeat” signal to hub periodically to confirm operability. It also features tamper resistant locking pins that lock alarm to the mounting bracket and battery drawer to prevent removal of battery or alarm. Designed for wall or ceiling mounting. Includes mounting anchors and screws.
    See all Smoke & Carbon Monoxide Detectors
    See all Smoke & Carbon Monoxide Detectors
  3. Google - Nest Protect 2nd Generation Smart Smoke/Carbon Monoxide Wired Alarm - White - Angle_Zoom
    Top comment

    "Sharp and crisp co / smoke detector. Love how it turns into a night light which is quite convenient where I installed it in my hallway....In the constrution industry professionals know that CO/smoke detectors are life saving equipment and sometimes it is no longer possible to run 3 conductor cable to interconnect all Smoke detectors into one grid. "

    See all customer reviews

    Product Description

    Nest Protect reliably detects and alerts you to the presence of smoke or carbon monoxide in your home. The alarm speaks to you in a calm, clear, human voice, telling you the location of the danger. It also provides smartphone alerts and battery status updates to help protect your home. This hardwired version is suitable for homes with existing hardwired smoke or CO detectors.
    See all Smoke & Carbon Monoxide Detectors
    Top comment

    "Sharp and crisp co / smoke detector. Love how it turns into a night light which is quite convenient where I installed it in my hallway....In the constrution industry professionals know that CO/smoke detectors are life saving equipment and sometimes it is no longer possible to run 3 conductor cable to interconnect all Smoke detectors into one grid. "

    See all customer reviews

    Product Description

    Nest Protect reliably detects and alerts you to the presence of smoke or carbon monoxide in your home. The alarm speaks to you in a calm, clear, human voice, telling you the location of the danger. It also provides smartphone alerts and battery status updates to help protect your home. This hardwired version is suitable for homes with existing hardwired smoke or CO detectors.
    See all Smoke & Carbon Monoxide Detectors
    See all Smoke & Carbon Monoxide Detectors
  4. IQAir - AirVisual Pro Air Quality Monitor for PM2.5, CO2, AQI, Temperature, and Humidity, IFTTT App Enabled - white - Front_Zoom
    See all Smoke & Carbon Monoxide Detectors
  5. IQAir - AirVisual Outdoor Air Quality Monitor, Detects PM1, PM2.5, PM10, CO2, Temperature, Humidity; Wi-Fi, LAN, German Made - white - Front_Zoom
    See all Smoke & Carbon Monoxide Detectors
  6. Eve - Room Indoor Air Quality Monitor - Silver - Front_Zoom

    Product Description

    Keep your home's indoor air quality clean and healthy with Eve Room. The award winning indoor air sensor with Apple HomeKit technology measures air quality (VOC), temperature, and humidity levels in your home. Detect harmful VOC levels caused by everyday items, and track when indoor air quality drops. You can then ventilate in good time, and adopt healthy habits by following the history in the Eve app. Eve Room joins your Thread network automatically and is Apple HomeKit enabled for outstanding ease of use with iPhone, iPad, and Apple Watch. Enjoy the freedom to place the wireless indoor air sensor wherever you like - you can recharge the accessory via USB, and control Eve Room directly without any need for a bridge. And the best thing about all Eve accessories is how they protect your privacy: Eve does not harvest your personal data and there is no Eve cloud, so your data won't get exposed.
    See all Smoke & Carbon Monoxide Detectors

    Product Description

    Keep your home's indoor air quality clean and healthy with Eve Room. The award winning indoor air sensor with Apple HomeKit technology measures air quality (VOC), temperature, and humidity levels in your home. Detect harmful VOC levels caused by everyday items, and track when indoor air quality drops. You can then ventilate in good time, and adopt healthy habits by following the history in the Eve app. Eve Room joins your Thread network automatically and is Apple HomeKit enabled for outstanding ease of use with iPhone, iPad, and Apple Watch. Enjoy the freedom to place the wireless indoor air sensor wherever you like - you can recharge the accessory via USB, and control Eve Room directly without any need for a bridge. And the best thing about all Eve accessories is how they protect your privacy: Eve does not harvest your personal data and there is no Eve cloud, so your data won't get exposed.
    See all Smoke & Carbon Monoxide Detectors
    See all Smoke & Carbon Monoxide Detectors
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