Best Kidde Smoke Detectors in 2026

Product 1: Keep your family safe with this 2-pack of easy to use, battery operated carbon monoxide alarms; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

Product 1: Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room

Product 1: A loud 85-decibel alarm sounds when CO levels reach dangerous levels

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device

24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)

Easy installation mounting bracket included for quick installation in 4 orientations

Product 1: CO detector with alert modes & 2 LED lights that pulse for power & CO detection

Product 1: Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm

Product 1: Protects during a power failure - CO detector operates on 3-AA batteries

Fire and CO detector in 1 unit with alert modes, LED lights, and 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

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

Product 1: CO detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home

Product 1: Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire

Product 1: Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage

Provides protection from fire and carbon monoxide in one unit with Photoelectric sensor.

Fire warning - The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message “Fire Fire” The alarm will repeat pattern until unit is reset or smoke is eliminated.

Carbon monoxide warning - Four short alarm beeps followed by a verbal warning “Warning, Carbon monoxide” This continues until the unit is reset or the CO is eliminated.

Easy Installation - Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness with easy off cap does not require stripper tool. Tinned strands increase conductivity and wire nut grip.

Fewer callbacks - One button design for easy operation and less confusion. Operates Hush and alarm test. Battery run down protection will shut down alarm memory when AC power is not present, reducing low battery chirp. Dust cover protects sensor from contaminates during construction reducing nuisance alarms.

User-friendly features - Tamper resist locking feature deters alarm theft. Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system.

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

Ionization & Electrochemical sensor technologies - smoke detector detects invisible fire particles, while the CO alarm detects poisonous carbon monoxide gas; 85 decibel alarm alerts of fire

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

At only 4-inches in diameter, this is one of the smallest smoke detectors you can install in your home, RV, and mobile home

Operating on a 9-volt alkaline battery, the Kidde smoke alarm provides reliable detection of smoke or fire, even during power outages

Installation is easy, no wiring required. The alarm can be installed on the surface of any wall or ceiling

Quick convert adapter allows the installation of a new Kidde alarm to an existing competitive wiring harness

The smoke alarm adapter also allows the specified approved brands and models to be interconnected with other Kidde product

Helps you to quickly replace Firex or wire-in smoke alarms. The KA-F2 can only be used when replacing Firex models: FADC, ADC, AD.

Ionization sensor technology senses invisible fire particles, associated with fast flaming fires

Operates on AA alkaline batteries (included), providing reliable detection during a power failure

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

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

Ideal for hallways with emergency safety light to guide you to safety. Safety Light illuminates the path to safety

Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system

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

Digital display displays the level of carbon monoxide the unit is sensing

Three convenient mounting options

Peak level button displays the peak CO level recorded by the alarm since it was last reset

Hush feature temporarily silences smoke detector nuisance alarms

Battery-operated smoke alarm provides detection even during power outages; 9V battery included

Twist-off mounting allows for fast installation and easy, safe battery replacement

Heat detector alerts to temperatures rising above 135⁰ Fahrenheit & sounds an 85-decibel alarm to help protect your family

Heat alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup

Quick-connect power harness makes installation fast and easy

Easy Installation - Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness with easy off cap does not require stripper tool. Tinned strands increase conductivity and wire nut grip.

Fewer Callbacks - Large centrally located Test/Hush alarm control button. Dust cover protects sensor from contaminates during construction reducing nuisance alarms.

User-Friendly Features - Easy access front loading battery door. Battery backup provides protection in case of power failure. Interconnectable with up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user’s guide for complete instructions.

Dual sensor contains both a photoelectric and ionization sensor providing dual sensor protection in your home

Hush feature temporarily silences nuisance alarms

Interconnectable, 120V hardwire alarm with battery backup that provides protection even during a power outage

Ideal for the living area with 10-year sealed lithium battery and Hush feature to silence nuisance alarms

Hassle-free protection - Goodbye late night low battery chirps! Never replace a battery during the alarm’s operating life and no need to worry about the batteries being removed

Always on - Sealed-in lithium battery powers alarm for 10 years - the life of the alarm

Industry First: 2-in-1 Detection - Carbon monoxide detector & Indoor Air Quality Monitor combo alerts you to both CO & indoor air quality hazards, in a single device

Voice Alarm announces the hazard type when detected: “Fire!” = smoke or fire, “Warning Carbon Monoxide” = CO gas, or "Replace Alarm" when the unit has come to its end of life span

Easy Installation: download the Kidde app, scan the QR code on the back of the CO alarm, & plug into a standard outlet

Tamper resist feature – Can be activated to cause unit to go into alarm if it has been unplugged or has come loose from the outlet

2 LED’s: Red - Illuminates when in alarm mode. Green – AC power is present, normal operation

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