Feature: 1. 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 for you to carry. 2. 7in1 Air Quality Tester: This detector can testing PM2.5, CO2, TVOC, HCHO, AQI, temperature and humidity for you at the same time. 3. Color Display: This air quality monitor with a large display for you to see the detecting data more clearly, you can get the results easily. 4. MEMS Sensors: Uses high-precise MEMS sensors, with fine interference resistance ability, stable working performance, with low power consumption. 5. Temperature and Humidity Detect: ℃ and ℉ two temperature units display, real-time detection, automatic refresh data, with multi-use. 6. 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. 7. Wide Applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. 8. Wifi Version Adding Function: 9. Cellphone Tuya APP Controls: you can see the real time air quality and detection values through your mobilephone, and has a corresponding curve chart of historical recorded data trend for you to review. 10. Setting Mode: a. WIFI network setting, intelligent config networking; b. air quality alarm reading value setting; c. alarm clock time setting. 11. Calendar and Alarm Clock Function: calendar information of year, month, day, hour, minute, second, day of the week, with alarm time settings function. Specification: Specifications: Material: ABS Color: black, white, black-wifi , white-wifi (optional) Battery : 1 * lithium battery , 3.7V, 1200mAh (included) Sensors: MEMS sensors PM2.5 measurement ranges: 0-999ug/m³ TVOC measurement ranges: 0-3.000mg/m³ CO2 measurement ranges: 400-5000PPM HCHO measuring ranges: 0-3.000mg/m³ Temperature measurement ranges: 0-60℃ Humidity measurement ranges: 0-99%RH Recharging method: Type-c interface Item size: 95 * 95 * 40mm / 3.74 * 3.74 * 1.57in . Package List: 1 * Air Quality Monitor 1 * Type-C Cable 1 * Guideline