Portable Size: This monitor is small in size and you can use it on your desk without taking up too much desk space, also easy to carry. 7 in 1 Air Quality Tester: This detector can testing PM2.5, CO2, TVOC, HCHO, , temperature and humidity at the same time. Color Display: This air quality monitor with a display to see the detecting data more clearly, you can get the results . MEMS Sensors: Uses high-precise MEMS sensors, with fine interference resistance ability, stable working performance, with low power consumption. Temperature and Humidity Detect: and two temperature units display, real-time detection, automatic refresh data, with multi-use. 4 Levels of Air Quality: Equipped with air quality level division function, there are four different color to show the different qualities of the air being monitored, allowing you to more accurately and more graphic know the current air conditions. Wide Applications: Suitable foragricultural planting, greenhouse vegetables, production warehouse, material processing, , business offices, and etc. Specifications: Battery: 1 * lithium battery, 3.7V, 1200mAh (included) Sensors: MEMS sensors PM2.5 measurement ranges: 0-999ug/m TVOC measurement ranges: 0-3.000mg/m CO2 measurement ranges: 400-5000PPM HCHO measuring ranges: 0-2.000mg/m Temperature measurement ranges: 0-50/32-122 Humidity measurement ranges: 0-99%RH Recharging : Type-c interface Versions: Tuya Wifi Material: ABS colour: White Package Contents: 1 x Air Quality Meter 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.