Connect the power to 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 humidity stop starts flashing, then press UP or DOWN to adjust the setting. Auto-detection function: Press UP and DOWN simultaneously to display 888 and initiate 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 Dimensions: 60x45x31mm Material: Metal + Plastic Color: As shown Package Contents: 1 x Humidity Controller Note: Light and screen differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3cm.