Features 1、This is a digital display of soil moisture, the probe can be directly inserted into the soil. 2、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. 3、No need to correct errors during normal use. Using multiple modules to correct values at the same time facilitates unified management and operation. 4、HCW-M214 digital soil moisture sensor controller for automatic watering system. 5、20-99% RH humidity range and 1% RH control accuracy, 10A control current for your choice, widely used in farm/home/factory digital irrigation. Specification Item Type: Moisture Controller Module Model: HCW-M214 Working Voltage: DC 12V Output Mode: Output Switch Control Current: 0-10A Humidity Range: 20-99%RH Control Accuracy: 1%RH Size: Approx. 52 x 43 x 16mm / 2.0 x 1.7 x 0.6in Package List 1 x Controller Module 1 x Sensor 1 x Line