Best Alert Pro in 2026

Sealed-In 10-year lithium battery

100% Satisfaction guarantee...or your money back

✔️ 100% customer satisfaction guaranteed. if you dont like it will take it back no quations ask

✔️ Digital LCD Display and Voice Warning

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

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. Emits T3 Pattern

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)

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

Simple to use, with a single test/silence button, and EZ access battery drawer allows you to change batteries without removing alarm from the ceiling

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)

It can ship within the US except New York

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event

Battery operated to provide reliable detection, even during power outages; two AA batteries included

UL Certified with a 10-year limited warranty on alarm

Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke 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 standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage

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

Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard

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

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)

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)

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.

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.

Green LED indicates power to the smoke detector

An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire

Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam

UL Certified, 10-year limited manufacturer warranty

Simple Installation: Requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs

Premium Quality: Made from a premium PC material, ensuring exceptional quality and protection; approved by the ETL and meets the UL 217 and UL 2034 safety standards

Test/Silence Button: The single push of a button will either test or silence all units in the system

Full Home Coverage: Link up to 24 Link+ wireless smoke alarms, CO alarms, and combination alarms for maximum home protection

Easy to Install: This smoke and CO detector is easy to mount onto any wall or ceiling using the included accessories

Whole-home interconnection — maximum of 24 Kidde devices of this type can be interconnected; when one alarm sounds, they all do

Hush button — quickly and easily silence false or “nuisance” alarms from things like routine cooking or shower steam

UL Listed, 10-year limited warranty

Simple Installation & Operation: This battery-operated unit can be installed quickly and effortlessly without an electrician; one-button operation allows you to test and silence the alarm with ease

Premium Quality: Made from a premium PC material, ensuring exceptional quality and protection; approved by the ETL and meets the UL 217 and UL 2034 safety standards;comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support

Product 1: To ensure complete protection make sure to place 1 on each level of your home and in each bedroom

Product 2: Help keep your family safe with this battery powered smoke alarm featuring an ionization sensor for smoke detection; a loud 85 decibel alarm sounds when smoke levels are elevated

Product 2: Ionization sensor is effective in recognizing smoke from flaming fires such as paper and grease fires

Product 2: Battery operated alarm unit provides continuous monitoring even if there's a power failure; Plus, it's easy to install

Product 2: Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard

Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings

UL Certified, 10-year limited warranty

Will interconnect with up to 24 other devices including smoke, CO and heat alarms

Simple to use silence/test button; separate smoke and CO latching alarm indicators

9-volt battery included; 10-year limited warranty

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

Operating Temperature: -40° F to +158° F

Loud 85 dB Alarm

Dimensions: 6 3/8” W x 2 7/8” H x 1” D

Meets Rvia or Nfpa Requirements And Is Listed To Ul 1484 Rv And Ul 2034 Rv

Built-In 10-Year Battery: Features a built-in 10-year lithium battery, so you’ll never need to worry about replacing batteries during the lifetime of the unit

Informative LCD: Displays real-time CO levels from 30–999 ppm (parts per million) taken from the surrounding air, as well as battery level and working status

Test/Hush Button – It’s simple to test or hush false alarms by pressing the button right on the face of the device

Whole building detection – multi-pack for easily installing 1 fire detector on each level of the home & in each bedroom

UL Certified, 10-year limited warranty

Package contains 6 Kidde smoke detectors

Interconnectable - Connect up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user’s guide for complete instructions.

Battery backup - 9v battery backup (included).

Hush feature temporarily silences nuisance alarms

One touch test button tests unit's electronic circuitry

Battery backup 9V battery included

Tamper resist locking pin helps deter alarm tampering and theft

Kidde smoke alarms meet the UL requirements

Advanced materials- This is a high-quality battery that is mercury-free, lead-free, and chromium-free, and can be discarded with household waste. All materials have been carefully inspected and verified to meet the most stringent quality standards.

Check carefully- This battery model is 9V 6LR61, please check the model and the package quantity before purchasing the product.

Uses ionization sensing technology to detect smoke from flaming fires and emits a loud 85 decibel alarm when fire particles are detected

UL Certified, 3-year limited warranty

Battery operated 9V battery included

Test button tests unit's electronic circuitry horn and battery function

Four inch diameter discreet design

Easy installation

Meets the UL requirements and widely-accepted safety standards

Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit

To ensure complete protection make sure to place one on each level of your home and in each bedroom. Same features as SA340CN and SA340B but adds Sealed Battery Technology. Sensor Type: Ionization

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)

No Battery Changes for the Life of the Alarm; 3V Lithium Power Cell Included

Ionization Sensor

Perfect Mount allows for easy alignment of alarm

10-year limited warranty

No Battery Changes for the Life of the Alarm; 3V Lithium Power Cell Included

Ionization Sensor

Perfect Mount allows for easy alignment of alarm

10-year limited warranty

Auto-Check Function: Constantly monitors itself and quickly warns you of low battery or faults

Worry-Free After-Sales Services: All X-Sense smoke detectors come with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support; easy-to-follow instructions are included for convenience; feel free to contact us if you have any questions

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)

Simple to use, with a single test/silence button; Included 10 year lithium battery features a locked drawer to prevent tampering

10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety

Rigorously tested to meet UL standards, Emits T3 pattern

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)