The EstAlert Smart Carbon Monoxide Alarm is a premium-class device that sends alerts to your smartphone even when you're not at home.  It's equipped with the latest electrochemical sensor, quickly and accurately detecting the presence of carbon monoxide in a room. Don't worry about changing batteries—they last up to 10 years. No monthly fees.

Key Features:

Advanced Electrochemical CO Sensor: Meets the highest standards, rapidly detecting CO presence. The detector performs self-diagnosis and immediately alerts you to any errors.

Smartphone Alerts via WiFi: The detector requires a home WiFi network to operate.  Download the free Tuya app (available on Google Play and App Store) and connect the detector to your WiFi.  When CO is detected, you'll receive an alert on your smartphone.  You can name each detector (e.g., "Living Room," or "Kitchen") for clear identification.  The detector also provides an audible alarm (85dB) at the device itself.

Mute Function in the App: Press the test button on the detector itself, or use the app, to mute the alarm for 10 minutes. This is useful for false alarms. The detector automatically returns to normal mode after 10 minutes. If CO is still present, it will sound the alarm again; otherwise, it returns to monitoring mode. (Use only if you are absolutely sure there's no danger.)

LCD Display: Shows real-time CO levels, temperature, and humidity of the room.  (Temperature display accuracy ±1-2°C, humidity display accuracy ±15%).

Long-Lasting Battery: 10-year lifespan and full manufacturer's warranty. 4 X AA batteries are included. Battery life in standard use is up to 10 years. In very hot or cold conditions, or with frequent use, batteries might deplete sooner. You have the option to replace the batteries and the app will alert you to low battery levels.

Easy Installation: A baseplate makes the installation process convenient. Screws/plugs for mounting the base plate are included.

Tuya And Smart Life App: Free download from Google Play or App Store.  The app is available in English.

Important Notes: The detector requires a home WiFi network to function properly.  The App is crucial for monitoring and controlling the device's functions.

Wi-Fi requirements: 802.11g, 802.11n. Frequency 2.4 GHz (Does not work with frequency 5 GHz)