Sonoff smart sensor airguard for co2 with matter air quality monitor

【Multi-Metric Environmental Monitoring】Simultaneously tracks and displays temperature, humidity, and CO2 levels, with support for switching temperature units to fit your preferences. 【High Precision & Rapid Sensing】Engineered with professional-grade accuracy using an NDIR sensor delivering ±(50 ppm + 5%) precision. Refreshes every 5 seconds to ensure timely updates on changing air conditions. 【Air Quality Improvement Advice】Offers improvement advice by combining real-time indoor readings with outdoor air conditions in your city, helping you take the right actions to maintain a healthier environment. 【One-Year Historical Data Storage】Securely stores up to one year of past air-quality data and supports export, giving you a reliable foundation for analyzing long-term home air patterns. 【Supports the Matter Protocol】Enabling seamless setup in Apple Home, Amazon Alexa, Google Home, and more. Easily build smart scenes with third-party devices for automated air-quality control.