Italian Nesa Soil Moisture (Humidity) Sensor
A soil moisture sensor is a device that detects the dielectric constant of soil through high-frequency measurement (70 MHz). This value depends on the soil's water content and is insensitive to water mineralization. Water in the soil is a conductor, and based on its concentration, a relative humidity indication of the soil can be obtained. The sensor automatically performs temperature compensation, and the output is standard 4-20 mA, 0-2 Vdc, or digital RS485/Modbus using the MCS module.