1. High-quality digital humidity controller. Durable. 2. Simple panel: two up and down buttons. Easy to set and operate. 3. High measurement accuracy of 0.1%. Easy-to-read data. 4. Wide humidity measurement range of 00% to 99% RH and wide application range. 5. Multi-voltage selection: 12V/24V/220V is optional. You can choose the voltage according to your needs. Specification: Features: High-quality digital humidity controller. Durable. Simple panel: two up and down buttons. Easy to set and operate. High measurement accuracy of 0.1%. Easy-to-read data. Wide humidity measurement range of 00% to 99% RH and wide application range. Multi-voltage selection: 12V/24V/220V is optional. You can choose the voltage according to your needs. Specification: Model: XH-W3005 Weight: 68 g/2.4 oz Input voltage: 12 V, 24 V, 220 V (optional) Humidity range: 00% ~ 99% RH Humidity control accuracy: 0.1% RH Load power: 120 W / 240 W / 1500 W Output type: Direct output Hole spacing: 73 mm/2.9 inches Size: 60 * 45 * 31 mm/2.4 * 1.8 * 1.2 inches Instructions for use: Connect the thermostat to the circuit and power supply. The digital display shows the starting temperature and current humidity setting. Press the \"up\" button to display the starting temperature. Hold the \"up\" button for about 3 seconds. The starting humidity value flashes, which can be adjusted with the up and down buttons. Set the humidity shutdown: Press the \"down\" button to display the humidity shutdown. Hold the \"down\" button for about 3 seconds to stop the digital humidity display from flashing. This can be adjusted with the up and down buttons. Reset to factory settings: When the device is powered on, press and hold the up and down buttons simultaneously. The digital display shows 888 and then automatically switches to the humidity detection value. This resets the factory settings. Package list: 1 x Digital humidity controller. Note: The W3005 has a direct output. Therefore, do not power it on if the output terminal is not properly connected or disconnected. In case of two-stage contact spark or careless wire contact, unnecessary problems may occur.