SONOFF AirGuard CO2, Smart Indoor Air Quality Monitor, Matter Compatible, 2.4GHz WiFi, Carbon Dioxide Detector for CO2/Temp/Humidity, Real-Time Display & Alarm, for Bedroom, Nusery room

[Matter Compatibility] As an Air Quality Meter that supports the Matter ecosystem, it can seamlessly integrate with various smart home platforms (including Apple Home, Amazon Alexa, Google Home, SmartThings, and Home Assistant). [High Accuracy & Fast Response] With a built-in NDIR sensor, this CO2 meter delivers ±(50ppm + 5%) accuracy across a range of 400-5000ppm. The continuous power supply ensures data updates every 5 seconds. [All-in-One Air Quality Display] Monitor key environmental metrics at a glance-CO2, temperature, and humidity, all displayed together on one screen. [Triple-Alert System for Air Quality Warnings] Get notified in three ways: via a sound alarm, a multi-color LED indicator, and app alerts. Customize all alerts through the eWeLink app to activate when CO2, temperature, or humidity exceeds your defined thresholds. Perfect for bedrooms, offices, and nurseries. [Year-Long Data Tracking & Export] Gain valuable insights into your indoor air trends with full access to 12 months of historical data. View clear, graphical charts directly in the app and export the data for deeper analysis or sharing, helping you make informed decisions about your home environment.