The Best Smoke Detector 2021 of 2023

Complies with all current 10 year legislation in U.S. states/cities where required

The 10 year lithium ion battery offers continuous power for the life of the alarm and provides continued monitoring even if there's a power failure

Loud 85 decibel siren sounds to alert you to danger

To ensure complete protection make sure to place one on each level of your home and in each bedroom

Meets UL217 standards and complies with legislative requirements for 10 year battery operated smoke alarms

Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast burning and smoldering fires

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)

Complies with all current 10 year legislation in U. S. states/cities where required

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

A loud 85 decibel alarm sounds when Carbon Monoxide, and Smoke levels begin to rise

Features a sleek, low profile design to blend more fully into the wall and out of sight

10-year limited ; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for your safety (the date printed on the item is the manufacturing date, not the expiration date)

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)

Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm

UL Certified, 10-year limited warranty

Works with Alexa for voice control (Alexa device sold separately).

Smart, really smart - intuitively understands when to turn on your heating or cooling equipment based on your home's unique energy profile, the weather outside, and thousands of other data points to make sure you're comfortable at all times

Knows you have a life - senses whether anyone's home and which rooms are occupied, delivering comfort when you're at home and saving you energy and money when you're not

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 electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor equipped with Optipath 360 technology that enhances detection with 360 degree access and reliably detects smoke from smoldering fires

In case of danger, the loud spread spectrum alarm is designed to be heard easily by even those with some hearing issues

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

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)

Phone Alerts: Nest Protect sends you a message when there's a problem or the batteries run low.

Smoke and CO Locator: Nest Protect speaks up if there's smoke or CO and tells you where it is so you know what to do

Detects CO: Carbon monoxide is an invisible poisonous gas. Nest Protect tells you where itâ€â„s hiding.

A Light in the Dark: Usually Nest Protect has its light turned off but when you walk underneath it Pathlight can light your way.

Fast Detection: Every second counts. The Split-Spectrum Sensor looks for both fast and slow burning fires.

Know from anywhere: Connect Nest Protect to Wi-Fi and it will send an alert to your phone if the alarm goes off or the batteries run low

Wireless: Working Wi-Fi connection: 802.11b/g/n @ 2.4GHz Wireless reconnect: 802.15.4 @ 2.4GHz Wireless Interconnect: 802.15.4 @ 2.4GHz Bluetooth Low Energy (BLE). Tells you what and where: It speaks up to tell you if there's smoke or CO and where.

App Silence: Nest Protect is the first alarm you can hush from your phone. Simply walk to the Nest Protect that noticed the problem and open the Nest app.

Split-Spectrum Sensor: In an emergency seconds count. Nest Protect uses two wavelengths of light to look for both fast and slow burning fires.

This Google Product features the Google Seal for Online Marketplace when purchased from a seller other than Amazon.com.

Know from anywhere: Connect Nest Protect to Wi-Fi and it will send an alert to your phone if the alarm goes off or the batteries run low. Field of View 120°

Wireless: Working Wi-Fi connection: 802.11b/g/n at 2.4GHz Wireless Interconnect: 802.15.4 at 2.4GHz Bluetooth Low Energy (BLE). Tells you what and where: It speaks up to tell you if there’s smoke or CO and where the problem is, so you know what to do.

App Silence: Nest Protect is the first alarm you can hush from your phone. Simply walk to the Nest Protect that noticed the problem and open the Nest app.

Split-Spectrum Sensor: In an emergency, seconds count. Nest Protect uses two wavelengths of light to look for both fast and slow burning fires.

Heads-Up: Get a friendly voice alert so you can handle burning toast before it becomes a burning toaster.

10-year carbon monoxide sensor: Carbon monoxide is odorless, invisible and deadly. When there’s CO, Nest Protect tells you where it’s hiding.

CO detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home

Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire

Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage

Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases

UL Certified, 10-year limited warranty

Combined smoke and carbon monoxide alarm detector: Both smoke from fire and excessive carbon monoxide threaten our lives. This product will automatically detect these two harmful substances every 8 seconds. Once the hazard value reaches the level will emit a sound greater than 85DB to remind you to stay away from the danger.

High quality sensors: We use high quality photoelectric sensors and electrochemical carbon monoxide sensors. Among them, photoelectric sensing technology is more accurate for visible smoke recognition. It can reduce false alarms during actual use and there is no radiation. Higher safety stability.

LCD display and LED indicators: The one-touch detection button provides a real-time display of the current smoke and carbon monoxide levels. the LED indicator flashes every 30 seconds. Green light means normal, yellow light means error and red light means alarm. Very intuitive to see the alarm status.

Battery Powered: PETRICOR smoke and carbon monoxide alarms are battery powered (Not Hardwired). It can be installed anywhere you need it: living room, utility room, bedroom, garage, basement, or even in your RV or camping.

Quality service: You have any questions about our fire & CO alarms, feel free to contact us. We will solve the problem as soon as possible to make you have a pleasant shopping experience.