Fangrui Product Details Display Type: Digital Usage: Household Model Number: Xh-w3005 Style: Embedded Max Measuring Temperature: 49 Celsius Under Theory: Humidity Sensor Range: 0~rh Humidity Control Precision:0. Rh Measuring Accuracy: +/- Rh Moisture Range:~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/low Pressure-dc12v Material:abs Size:60*45*31mm Package Contents: 1 X Digital Humidity Controller 1 X Humidity Sensor Only The Above Pack