Display Type: Digital Usage: Household Model Number: XH-W3005 Style: Embedded Max Measuring Temperature: 49 Celsius & Under Theory: Humidity sensor Range: 0~99%RH Humidity control precision:0.1% RH Measuring Accuracy: +/- 2%RH Moisture range:00%~99%RH MAX Output: 10A output type:Direct output Connect to power supply , display Instructions humidity Set start the humidity: Press the UP button display start the humidity , long press about 3s the start the humidity flashing , then press the UP or Down adjust the set Set to stop the humidity: Press the Down button display Stop the humidity , long press about 3s the Stop the humidity flashing , then press the UP or Down adjust the set Restore the factory Settings: press the UP and Down button at the same time , will display 888 then will Automatically detect the humidity colour:white Voltage:high pressure-AC220V Material:ABS size:60 x 45 x 31mm Package Contents: 4 x Digital Humidity Controller 4 x Humidity sensor 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.