Features 1、The soil humidity sensor is easy to operate,light weight. 2、The sensor is automated for a more convenient using performance. 3、The probe can be inserted directly into the soil. This is a digital display of soil moisture. When the humidity is lower than the set value, start the pump to start watering, and stop watering when the humidity reaches the set value. The operation is very simple. 4、You can define moisture value of stop working at will. 5、The humidity control range is from 20~99%RH. Specification Item Type:Soil Temperature Sensor Working Voltage:DC12V Control Current:0~10A Humidity Range:20~99%RH Control Accuracy:1%RH Size:52 x 43 x 16mm / 2.05 x 1.69 x 0.63in Weight: 30 g / 1.06 oz(approx.) Package List 1 x Sensor Module