1.Connect to power supply , display Instructions humidity 2.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 3.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 4.Restore the factory Settings: press the UP and Down button at the same time , will display 888 then will Automatically detect the humidity Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specifications: 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 Colour:white Voltage:high pressure-AC220V Material:ABS size:60*45*31mm Package Contents: 1 x Digital Humidity Controller 1 x Humidity sensor includes: Choice 1: 1x Probe Wire Choice 2: 1 x Digital Humidity Controller 1 x Humidity sensor