Best Siterwell Smoke Alarms in 2026

Keep your family safe with this 3-pack of hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure

Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor that detects the fine particles of a fast-burning 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

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

Keep your family safe with this talking battery operated smoke and carbon monoxide alarm; it's equipped with voice and location, so you are alerted of the danger and where it originates from across your house

Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home

Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire

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

Smoke detector and carbon monoxide detector that speaks up in a friendly voice to give you an early warning when there's smoke or CO in your home

Split Spectrum Sensor looks for both fast burning and smoldering, and tells you where the danger is

Get phone alerts so you know something's wrong even when you're away from home[1]

Power Supply and Current Draw: 12 vDC 90mA @ 12 vDC

Alarm Point: < 25% LEL of Propane

Operational Range: 12vDC +/- 15%

2-in-1 Protection: This combination detector protects against both smoke and carbon monoxide

Wireless Interconnection: When one alarm sounds, all alarms will go off

10-Year Sealed Battery: This wireless alarm features a 10-year lithium battery and will give a low battery warning

2-in-1 Protection: The combination smoke and CO detector detects both smoke and carbon monoxide faster and more accurately using a photoelectric smoke sensor and an electrochemical CO sensor

10-Year Battery: The fire and CO alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage

Combination Alarm with CO Readings: The informative LCD will show you the battery level and real-time CO levels in PPM (parts per million)

Easy to install. Scan, Plug and Play. Full installation and setup in less than 10 minutes

Protected and informed, with Realtime phone app notifications, emails, SMS messages and automations (turn on optional sirens, smart plugs..)

FAIL/SAFE: Patented technology! Pair your leak sensors to battery powered valve controllers and/or sirens. No internet, no WiFi, power outage no worries!

Double-Duty Alarm Detects Both Gas Leaks And Co Gas Simultaneously

Reliable 12V Power Means No Missing Or Dead Batteries To Replace. Operating Temperature: minus 40° F To plus 158° F

Flush Mount

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

10-Year Battery Smoke Alarm: The smoke detector is built with an energy efficient and eco-friendly lithium battery with low power consumption, enabling an incredible lifetime of 10 years with maximum reliability; spares you the hassle of frequent battery changes and provides uninterrupted 24/7 protection, even during power outages

Sensitive & Accurate: Built with an advanced photoelectric sensor and intelligent ST chipset, the alarm can quickly and accurately detect dangerous smoke levels from smoldering fires, and provide the earliest possible warning of fires; the dust-proof isolating plate inside the alarm ensures the detection sensitivity

Smart Auto-Check: This 10-year battery smoke detector has manifold self-inspection parameters with clear notifications; if it malfunctions, or if the battery is low, you will be notified immediately so that you can identify and resolve the problem quickly for comprehensive protection

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.

10-Year Battery Life Smoke Detector: Equipped with a sealed 10-year lithium battery for continuous power with no replacement required during the 10-year life of the alarm

Accurate & Responsive Smoke Alarm: Adopts the most advanced photoelectric sensor, enabling the alarm to quickly detect dangerous smoke levels from slow-burning, smoldering fires; provides the earliest possible warning of fire

Quick and Easy Installation: No need for rewiring, as the battery-operated smoke alarm is easy to install with the included screws, anchor plugs, and mounting bracket, or just use an adhesive magnetic pad (sold separately) to effortlessly install it on a wall or ceiling

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

More Accurate with Intelligent Technology: This hardwired smoke and carbon monoxide detector combines an advanced photoelectric smoke sensor and a Figaro electrochemical CO sensor to detect smoke from smoldering fires and dangerous CO levels quickly

Hardwired Alarm with Replaceable Battery Backup: This combination smoke and carbon monoxide detector is AC hardwired with a 9 V battery backup, so the alarm can continuously monitor for smoke and CO even if there is a power outage

Interconnects Up to 18 Units for Full Coverage: You can connect up to 18 X-Sense 2-in-1 hardwired alarm, so when one alarm is triggered, all will sound together throughout your home

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.

2-in-1 DETECTION: Detect both smoke and carbon monoxide with the DAB-TEK Carbon Monoxide Smoke Detector Combo

3 AA BATTERIES INCLUDED: No last-minute trips to the DIY store. This Smoke Alarm And Carbon Monoxide Detector comes with 3 long-life Batteries

PHOTOELECTRIC SENSOR: Opt for a Photoelectric Smoke And Carbon Monoxide Detector and reduce the likelihood of a serious fire spreading in your home

【Effective Gas Leak Detector】TOPTES PT520A natural gas detector can accurately help you locate the gas leakage of various combustible gases in tight spaces, such as methane, natural gas, propane, LPG, gasoline, etc. *Note: Please allow 30 seconds of warm-up time before the operation

【Flexible Probe Easy to Use】With a 17-inch flexible gooseneck( bendable in any direction), the portable gas leak detector makes it easy for you to access hard-to-reach areas, such as natural gas pipelines, propane storage tanks, gas fireplaces, sewers, basement, RV, and other narrow space. It can be carried anywhere to find leaks no matter outdoors or indoors

【Visual & Audible Alarm】 PT520A will rapidly respond in 0.5 seconds while gas is detected. Seven colored analog bars and a 75dB audible buzzer help you point out the gas leak location. Both of them increase with combustible gas concentration. Detection range: 50 to 10,000 ppm (*based on Methane)

HIGHER SECURITY & COMPACT SIZE: Featuring an upgraded smoke sensor with the latest photoelectric technology, this smoke alarm responds to hazardous smoke quicker than traditional alarms with an over 85 dB loud alarm and a rapid flashing LED indicator, giving you extra time to control the fire or safely escape

10-YEAR BATTERY SMOKE DETECTOR: The 10-year battery-operated fire detector reduces the trouble of frequent battery replacement; keeps your family safe by providing reliable, 24/7 uninterrupted protection, allowing you to sleep safe and sound

EASY TO INSTALL: This mini smoke detector has a diameter of only 78 mm, so it can be unobtrusively installed anywhere easily; effortlessly mount it onto any wall or ceiling using the included screws and anchor plugs

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

【10-Year Lifetime with 1-year 9V replaceable Battery】SITERLINK battery powered smoke detectors will last 10 years; the device includes one year 9V battery, easy to replace it; support to detected and notified automatically if it is low battary or error occured

【Photoelectric Sensor for Accurately Detect】Photoelectric sensor smoke alarms helps to monitor smoke and fires quickly, provides the warning of fires as soon as possible; the loudly alarm signal (Loud>85dB) helps your family keep far away from fire dangerous

【Test-Silence Button and LED Lights】Fire alarm with test button would be tested weekly by pushing the test button then holding it down at least 5 seconds; if sounds the alarm signal without fire dangerous, could push the test button to silence it for 10 minutes, please clean smoke, dust or insects in it, or raplace a new one if the battary low

This smoke and carbon monoxide alarm has long-lasting sensors and components that deliver a long life of up to 10 years; also includes a replaceable 3-year lithium battery

Informative LCD shows real-time CO concentrations and battery power to monitor for CO leaks and battery level; to save power, it will activate only when the device is tested or the ppm has reached the alarm level for a certain period

Featuring a light and thin design, this combination smoke and carbon monoxide detector has a 215–430 sq. ft (20–40 m²) detection range, fully protecting you and your family from dangerous smoke and carbon monoxide

Accurate & Sensitive: The small smoke alarm adopts photoelectric technology to detect smoke. More sensitive to light smoke and slow smoldering fires and more quickly to remind you. Keep your home safe 24/7

TEST BUTTON: Please test the fire detector once a month. If red LED flashes with “chirp” every 30 seconds, it's low battery signal, please change battery in 7 days. Small size, DIA 3.3inch. If you have any problem with smoke alarm, please contact us

Easy Installation: The smoke detector can easily install with mounting bracket. No hardwired anymore and you can install it wherever you want, except bathroom and kitchen, keep 3 ft away from the kitchen, bathroom, or other high air flow areas

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

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

【Humanized Design】Loud>85dB makes everyone in the house can hear the alarm clearly when the smoke alarm is chirping. If low battery there will be a signal alarm, which informs you to change a new battery

【Test Button】The smoke detector is easy to test by pressing the button for more than 5 seconds. Don't test by open fire, it will damage the alarm or ignite combustible materials and cause structure fire