Indoor Air Quality Monitor: • Multifunctional air quality detector with thermometer and hygrometer (humidity) functions. •Visual and audible alarm for low air quality. •It combines multiple air sensors with a built-in fan, allowing real-time monitoring of: - Carbon dioxide (CO2). - Temperature. - Humidity. •4 colors indicating air quality: green (good), yellow (moderate pollution), orange (high pollution) and red (severe pollution). •Large LCD screen. •Includes USB to USB-C charging cable. CO2 detection range: 400–5000 PPM CO2 detection sensitivity: 1 PPM TVOC detection range: 0–2 PPM Temperature measurement range: 0–50°C Temperature measurement accuracy: ±1°C Humidity measurement range: 0–99% RH Humidity measurement accuracy: ±2% RH Battery: 1200 mAh, charged via USB-C, 500 mA.ABS and metal alloy