The Best Smoke Detector of 2023

Fire & CO detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire Fire", "Warning Carbon Monoxide", or "Low Battery"

Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire at 10 feet

Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries

Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling

UL Certified, 10-year limited warranty

SMOKE ALARM WITH 10-YEAR BATTERY: This smoke alarm has a built-in lithium battery that is both energy-efficient and environmentally friendly; the battery offers a lifetime of up to 10 years of continuous protection, even during power outages

HIGHLY SENSITIVE & INTELLIGENT: Using the latest in sensor technology, this smoke alarm responds more quickly to hazardous smoke than traditional ones; ensures you have every possible second to evacuate and reduces your exposure to life-threatening smoke inhalation

SLEEK LOOK & DURABLE DESIGN: This smoke alarm is equipped with a low-disturbance LED light in its normal status and a sleek design with a diameter of 4.8 in and a thickness of 1.7 in, allowing for installation anywhere; its durable ABS housing is resistant to high temperatures

AUTO CHECK & LOW-BATTERY WARNING: This 10-year battery smoke alarm has multiple parameters for self-checking, low-battery warning, and malfunction indication; if the smoke alarm has a low battery, you will be notified immediately to identify and solve the problem quickly without losing the protection of your home

QUICK AND EASY INSTALLATION: No need for rewiring, as the battery-operated smoke alarm is easy and secure to install with the included screws, anchor plugs, and mounting bracket, or just use Ø 2.8 in magnetic adhesive pads (not included) to effortlessly install it on a wall or ceiling

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. 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)

Combination Smoke and Carbon Monoxide Alarm: One alarm to protect against 2 deadly threats, including smoke and carbon monoxide; accurately detects carbon monoxide from any potential source

10-Year Battery-Operated Smoke and CO Alarm: A sealed lithium battery enables the unit to keep you and your family safe and sound for up to a decade with no need to replace batteries frequently; a low battery warning lets you know the unit is coming to its end of life

Faster Response to Dangers with Loud 85 dB Alarm: Upgraded photoelectric and electrochemical sensors significantly increase the sensitivity of the alarm for a faster response time while minimizing false alarms

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

PROTECTION FROM TWO DEADLY THREATS: One alarm protects against both dangerous smoke and carbon monoxide (CO) in the surrounding air; accurately detects CO from any potential sources; upgraded photoelectric and electrochemical sensors significantly increase the alarm’s sensitivity, enabling faster response times

10-YEAR BATTERY-OPERATED SMOKE & CO ALARM: A sealed lithium battery enables the unit to monitor your home 24/7, keeping you and your family safe and sound for up to a decade without frequent battery replacement; a low battery warning indicates the unit is coming to its end of life

PRACTICAL LCD DISPLAY: Clearly displays real-time CO levels above 30 ppm (parts per million) taken from the surrounding air, as well as the status of the alarm’s battery level

FASTER RESPONSE TO DANGERS WITH LOUD 85 DB ALARM: Gives you the earliest possible warning of smoke and CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator; this alarm is sure to wake up you and your family, even when sound asleep

SIMPLE INSTALLATION & OPERATION: Battery-operated unit installs quickly and easily without an electrician; one-button operation to test or silence the alarm

ASSURED QUALITY: 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

Test Button & Low Battery Signal: The smoke alarm is easily to test by pressing the button more than 5 seconds. If low battery there will be a signal alarm,which will recall you to change a new battery,then the smoke detectors will work as usual.

Safety Clip Feature: The photoelectric smoke detectors are not allowed mounting without battery install,so don't worry about the fire risk if you forget the battery.

Easy Install & Replacement Battery: The smoke detector is 9V battery operated,which can be quickly replaced.There 2 expansion screws in the box to help you install the alarm.

10 Years Life Time: The smoke alarm have 10-year long life(Not the battery life time) with loudly alarm(Loud>85dB) alarm signal at 3 meters,to make the room person can hear the alarm clearly when the smoke alarm is chirping,There will be enough time to leave from the dangerous.

Home Protection: Working smoke detector cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you realize a fire warning,the more time you can escape from the fire.

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

Alarm features an ionization sensor for smoke detection, which is effective in recognizing smoke from flaming fires such as paper and grease fires

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

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.

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

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

ACCURATE, RELIABLE & HIGHLY SENSITIVE: The X-Sense combination smoke and CO alarm has been redesigned from the inside out; it will ensure that smoke or CO triggers the alarm instead of interference by taking 3 separate smoke or CO samples from the surrounding air; a full 360° ring of air intakes ensures complete detection with no blind spots

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

LOUD ALARM TONE: This XP01 alarm is designed to deliver an alarm tone of over 85 dB with a rapid flashing LED indicator when smoke or CO is detected; this is sure to wake you and your family up, even when sound asleep, ensuring the safety and security of your home 24/7

PREMIUM QUALITY: Made from a premium ABS material, ensuring exceptional quality and protection; comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime customer support

Install these Kidde Worry-Free Smoke Alarms to provide your home with reliable protection against smoke and fire. The alarms are equipped with sealed-in lithium batteries that are designed to last for the life of the alarms. Photoelectric sensors can detect fire particles, which are associated with slow, smoldering fires, quickly. Once the alarms are attached to the mounting brackets, they activate automatically for simple use. Product Features: Provides reliable protection Sealed-in lithium b

【Activation Before Installation】 Press test button and hold it for more than 3 seconds until LED lights, and release it within 2 seconds, smoke detector will generate a “beep” indicating that it is successfully activated. Smoke alarm won't work if activation fails.

【Photoelectric Technology】The smoke alarm uses a photoelectric sensor to ensure that fire smoke can be detected in advance, giving family more time to escape. Besides, the photoelectric sensor is purer than the ion sensor, and avoids the radiation of the ion sensor.

【Fault Signal Alarm】The photoelectric smoke alarm is very easily tested only by pressed the button more than 5 seconds, the low battery will have a signal alarm which will recall you to change a new battery.

【Good Quality】The smoke detector has passed UL certification, its quality is guaranteed. The smoke alarm don't contain any radioactive material and won't cause harm to human's body.

【10 Years Life Time】The smoke alarm can be 10 years life time and has 10 years life time non-repalced battery. You won't worry about replacing the battery any more. And it can save energy and protect environment.