Features: Large LED display for clear reading and 4 buttons for easy operation. 0%~100%RH wide humidity measuring range, 0.1%RH control accuracy. The waterproof soil sensor probe can work outdoors for a long time and immersed in water. All parameters can be set to default setting after short circuit. Precise component for accurate measurement and stable performance. Specifications: Voltage: DC12V / DC24V / AC110V-220V (Optional) Material: ABS Relay: 10A Measuring Range: 0%~100%RH Control Range: 0%~100%RH Control Accuracy: 0.1%RH Sensor Cable Length: 1m Installation Size: 71 * 29mm / 2.80 *1.14in Item Size: 86 * 75 * 35mm / 3.39 * 2.95 * 1.38in Item Weight: 107g / 3.79oz Package Weight: 129g / 4.54oz Package Size: 10.3 * 9.8 * 5.8cm / 4.06 * 3.86 * 2.28in Package List: 1 * Humidity Controller 1 * Sensor Probe