Clear Display with Alarm Function: 2.8inch color digital display, clear and easy to read, Celsius/Fahrenheit can be switched, with multiple display modes, you can set it according to your needs. Support alarm function, parameter abnormal sound an alarm to remind you to make adjustments in time 20 in 1: Multifunctional air quality detector real-time monitors the CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, 5 groups of temperature and humidity parameters in the air, with time and date display, and can also be used as an alarm clock. APP Control: Support connecting Tuya APP 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 be automatically updated with your phone, no need to set, more convenient and smarter. Wide Applications: High-quality plastic material, sturdy and with durability, fall . Compact size and , easy to carry, perfect for home, , school, warehouse, agricultural planting, etc., Weight: 1.12876678144 Pounds, Manufacturer: Wesafrae