10 Best Smart Smoke Detector of December 2025

• Help keep your family safe with this battery powered smoke and carbon monoxide detector alarm
• Unit uses wireless Z wave technology to send mobile alerts if the alarm goes off, so you are aware whether you're at home or away
• Certified to work with smart home systems such as ring alarm security system, Samsung Smart things, and Nexia Home Intelligence when connected to a Z wave gateway hub (sold separately; Consult hub manufacturer to ensure compatibility with this first alert device); Not compatible with wink or Onelink
• Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam
• Electrochemical carbon monoxide sensor offers advanced detection technology
• Includes an 85 decibel horn, single test/silence button, side access to a tamper resistant battery door, and pins that lock the alarm to the mounting bracket
• 2 AA batteries (included)
• 7 year limited warranty; Meets UL217 & UL2034 standards
• 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)

FIRST ALERT

• Ring Alarm Smoke and CO Listener alerts you on your smart phone when your existing smoke and carbon monoxide detectors sound their alarms.
• This device does not detect fire, smoke or carbon monoxide and is intended to work with UL listed smoke and CO detectors that are 10 years old or less.
• Easy setup in minutes—without tools or professional installation. Requires Ring Alarm Security System (sold separately).
• Manage Ring Alarm Smoke and CO Listener and other Ring products with the Ring app.
• Battery life 3 years max. Batteries are replaceable.
• Optional 24/7 professional monitoring is just $10/month. No contracts or cancellation fees.

Ring

• 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
• Combined Carbon Monoxide and Smoke Alarm – A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home décor attractive.
• Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs – Tests alarm circuitry and triggers the voice announcement. Flashing green for normal operation and flashing red for alarm condition. Humidity Range: 10 percent to 95 percent relative humidity non-condensing
• Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing “low battery” and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note : The date printed on the item is manufacturing date, not the expiration date. Refer to the PDF attached below in Technical Specification for Manual.
• Voice Announcements - Hush Feature temporarily silences nuisance alarms with “HUSH MODE ACTIVATED” and “HUSH MODE CANCELLED” voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce “CARBON MONOXIDE PREVIOUSLY DETECTED” to warn of the CO incident, when the Test/ Reset button is pressed. Temperature Range: 40˚F (4. 4˚C) to 100˚F (37. 8˚C). Voltage (volts): 4. 5

Kidde

• About safe and sound: First Alert introduces Onelink Safe and Sound, an Alexa enabled, Apple HomeKit compatible hardwired photoelectric smoke and electrochemical carbon monoxide alarm, featuring a state of the art, Omni directional speaker backed by First Alert’s unparalleled reliability and equipped with the power of Alexa
• Easy mobile controls: Get remote notifications of an emergency in your home for 24/7 safety, plus track carbon monoxide levels, customize nightlights, and more, using First Alert's Onelink Home app
• No more confusing beeps: Track battery levels in the app and optimize safety by knowing when it’s time to replace them. AirPlay 2 enables a wireless multi room audio system, creating an easy way to stream music anywhere in the home to different iOS and other AirPlay 2 compatible devices
• Voice alerts: Key voice location technology announces the type and location of the danger in your home, keeping your entire home safe and connected during an emergency. Safe & sound supports AirPlay 2 and requires iOS 12.2 or later or macOS 10.14.4 or later. To use AirPlay 2, update your devices to the latest software version and add your AirPlay 2-compatible speakers to the Home app on your iOS device
• Easy to install: Optimal ceiling placement enhances the speaker’s acoustic quality; make installation fast and easy by using the included AC adapter plugs to replace your existing hardwire alarms without rewiring (AC power is required for Onelink Safe and Sound)
• Alexa enabled: You can talk to Alexa on your safe and sound, and ask it to play music or podcasts (from Music, Spotify, Pandora, and more), read audiobooks, fill you in on the news, check weather, control smart home devices, and more; plus Alexa’s always adding skills, so it gets smarter over time
• Interconnectivity: Unlike other smart combo alarms, safe and sound can connect with any other hardwired alarms in your home (including First Alert and non First Alert brands), and can send a mobile notification for any detected emergency, keeping your whole home safe and connected

FIRST ALERT

• Ring Alarm Smoke and CO Listener alerts you on your smart phone when your existing smoke and carbon monoxide detectors sound their alarms.
• This device does not detect fire, smoke, or carbon monoxide and is intended to work with UL listed smoke and CO detectors that are 10 years old or less.
• Easy setup in minutes—without tools or professional installation. Requires Ring Alarm Security System (sold separately).
• Manage Ring Alarm Smoke and CO Listener and other Ring products with the Ring app.
• Battery life 3 years max. Batteries are replaceable.
• Optional 24/7 professional monitoring is just $10/month. No contracts or cancellation fees.

Ring

• SMOKE + CO DETECTION 2-in-1 smart smoke and carbon monoxide alarm alerts you to both types of danger in your home, with a photoelectric smoke sensor and electrochemical carbon monoxide sensor
• MOBILE + VOICE ALERTS Alarm sends emergency notifications, via your phone, while voice alerts tell you the type and location of danger
• A HOME SAFETY NETWORK + ALEXA Interconnects with existing traditional hardwired alarms and other Onelink devices (sold separately) to create a smart home safety network, so if one alarm sounds, they all sound; works with Amazon Alexa so you can ask Alexa to check the status of your Onelink alarm (Alexa device sold separately).
• HARDWIRED + BATTERY BACKUP Hardwired alarm includes a 10-year sealed battery backup for protection in power outages; for maximum protection, hardwired alarms should be installed on every level of the home and inside each sleeping area
• COMPATIBILITY Compatible with Apple HomeKit; can be used on both Apple and Android devices
• INTERCONNECTIVITY: Unlike other smart combo alarms, Onelink can connect with any other hardwired alarms in your home (including First Alert and non-First Alert brands), and can send a mobile notification for any detected emergency, keeping your whole home safe and connected

FIRST ALERT

• Nest Protect 2nd Generation Smoke/Carbon Monoxide Alarm Battery
• Nest Protect sends a message when there's a problem or the batteries run low
• The Split­-Spectrum Sensor looks for both fast and slow-burning fires
• IN THE BOX: Six Long-Life Batteries - Backplate - Four Screws
• BUNDLE INCLUDES: Nest Protect 2nd Generation Smoke/Carbon Monoxide Alarm Battery - Deco Gear 2 Pack WiFi Smart Plug

Google Nest

• 10-Year Battery & 10-Year Sensor: This smoke and carbon monoxide alarm 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; an end-of-life signal will let you know when it's time to replace the unit for safety
• Practical LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds
• 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and 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
• Simple to Use: Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, instantly alerting the entire household, even those in sleep
• Quick & Easy Installation with Guaranteed Quality: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product

X-Sense

• 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 fires and tells you where the danger is
• Get phone alerts so you know something’s wrong even when you’re away from home[1]
• CO detector looks out for carbon monoxide and tells you where it’s located
• With App Silence, you can silence the smoke alarm with your phone in the Nest app when there’s only a little smoke
• No chirps to tell you the battery is low; Nest Protect tests its own batteries and gives you a Nightly Promise when you turn off the lights so you know everything is working
• When you walk under Nest Protect at night, Pathlight lights your way
• The Nest smoke and carbon monoxide alarm has sensors with a 10-year lifespan to help keep your family safe for up to a decade
• With Safety Check, you can test all your smoke and CO alarms with just a tap and get a full report once the test is done
• Please refer to the product description section below for all applicable legal disclaimers denoted by the bracketed numbers in the preceding bullet points (e.g., [1], [2], etc.)
• 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.
• 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. Connectivity: Bluetooth 4.0 LE, Wi-Fi 4 (802.11n)
• 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.

Google

• This worry-free alarm contains a sealed-in lithium power supply that lasts the lifetime of the unit

Kidde