Specification: Item Type: Digital Humidity Controller Material: ABS Use: Suitable for storage warehouses, greenhouses, and homes to monitor humidity levels Working Voltage: 110-220V Control Range: 0%-99%RH Output Type: Direct output Control Accuracy: 0.1%RH Measurement Accuracy: 0.2%RH Input Type: SFG309T Maximum Capacity: 10A Instructions for Use: Set Starting Humidity: Press the up button once to display the starting humidity value. Press and hold the up button for 3 seconds until the value flashes, then use the up and down buttons to set the desired humidity level. Set Stop Humidity: Press the down button once to display the stop humidity value. Press and hold the down button for 3 seconds until the value flashes, then use the up and down buttons to set the desired humidity level. Restore Factory Settings: With the device powered on, press and hold both the up and down buttons simultaneously. The display will show 888, then automatically proceed to detect current humidity, indicating that factory settings have been restored. Package List: 1 x Digital Humidity Controller