Digital Display: You can see the humidity value, temperature value, and carbon dioxide concentration clearly. Wide Applications: Suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. Compact Size: Designed with bracket and holes integrated housing, it supports placing on the table or hung on the wall. You can put it anywhere without taking up too much space. High Precise: With automatic calibration function, high sensitivity, superior interference resistance ability, stable working performance, with low power consumption. Real-time detection, automatic refresh data, with multi-use. Cellphone Tu ya APP Control: Search for Tu ya APP in the application program, the device will enter the pairing state after the firsttime opening, and you can view the specific data on the APP after completing the connection. (Because it takes time to upload data, it is normal for the APP data to deviate from the real-time data of the detector.), Manufacturer: HIJYMNZPQ