Connect the power, display the humidity indicatorSet the initial humidity: Press the UP key to display the initial humidity, press and hold for about 3 seconds to the humidity flashing, and then press UP or DOWN to adjust the setting.Set the humidity stop: Press the down key to display the humidity stop, press and hold for about 3 seconds to stop the humidity flashing, and then press UP or DOWN to adjust the setting. : Press UP and DOWN at the same time, display 888, and automatically detect humidity.Model: XH-W3005Humidity range: 00%~99%RHHumidity control accuracy: 0.1% RHMeasurement accuracy: +/- 2% RHLoad power: AC 110-220V 1500wMaximum output: 10Aoutput type: direct outputSize: 60x45x31mmMaterial:Metal + Plasticcolour:As ShownPackage Contents:1 * Humidity ControllerOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.