Usage Tips:Specification:Item Type: Digital Humidity ControllerMaterial: ABSUse: Storage warehouses, greenhouses, homes to check humidity at all timesWorking Voltage: 110-220VControl Range: 0%-99%RHOutput Type: Direct outputControl Accuracy: 0.1%RHMeasurement Accuracy: 0.2%RHInput Type: SFG309TMaximum Capacity: Maximum 10AInstructions for Use: Set Starting Humidity: Press the up button once to display the starting humidity, press and hold the up button for 3 seconds, the starting humidity number flashes, set the desired humidity value through the up and down buttonsSet Stop Humidity: Press the down button once to display the stop humidity, press and hold the button for 3 seconds, the stop humidity number flashes, set the desired humidity value through the up and down keysHow to Restore the Factory Settings: When the power is on, press the up and down keys at the same time, the digital tube will display 888 and then automatically skip to detect the humidity, that is, restore the factory settingsPackage List:1 x Digital Humidity Controller