Usage Tips:13 in 1: Multifunctional air quality detector real-time monitors the CO2 concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, temperature and humidity in the air, with time and date display, and can also be used as an alarm clock, timer or stopwatch. APP Control: Support connecting TuyaAPP to monitor data in real time, so you can easily view it no matter where you are, and also view historical data. Every time you connect APP, the time and date will be automatically updated with your phone, no need to set, more convenient and smarter. Built-in Battery & Quick Heat Dissipation: Equipped with 2000mAh high-capacity battery, low power consumption and long endurance, free from the of wires, the placement can be adjusted at will. With multiple ventilation holes, accelerating the convection between the air and the detector, to achieve the of effective detection and quick heat dissipation at the same time. Wide Applications: High-quality ABS material, sturdy and with nice durability, fall resistant. Compact size and , easy to carry, perfect for home, office, school, warehouse, agricultural planting, etc Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Color: White Material: ABS Display: 2.8 Inch TFT Screen CO2 Detection Ranges: 400-6000PPM, 5010%PPM CO2 Detection Accuracy: 1PPM TVOC Detection Ranges: 0-2.0mg/m3 HCHO Detection Ranges: 0-0.6mg/m3 PM2.5 Detection Ranges: 0-1000ug/m3 PM2.5 Detection Accuracy: 1ug/m3 PM1.0 Detection Ranges: 0-1000ug/m3 PM10 Detection Ranges: 0-1000ug/m3 Temperature Detection Ranges: -10-50, 2 Humidity Detection Ranges: 0-99%RH, 3%RH Package Contents: 1 x 13 in 1 Tuya WIFI Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.