Connect the power, display the humidity indicator. Set the initial humidity: Press the UP key to display the initial humidity, press and hold for about 3 seconds until the humidity starts flashing, 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 until the stop humidity starts flashing, then press UP or DOWN to adjust the setting. Auto-detection mode: Press UP and DOWN at the same time to display 888 and activate automatic humidity detection. Model: XH-W3005 Humidity range: 00%~99%RH Humidity control accuracy: 0.1% RH Measurement accuracy: +/- 2% RH Load power: AC 110-220V 1500W Maximum output: 10A Output type: Direct output Size: 60x45x31mm Material: Metal + Plastic Color: As shown Package Contents: 1 x Humidity Controller Only the above package content is included; other products are not included. Note: Lighting and monitor differences may cause slight variations in color. Measurement allows an error of +/- 1-3cm.