ELT-2 Soil moisture sensor Teros10 The Teros 10 is intended for retrofitting the Elsys ELT-2 and can measure soil moisture. The ELT Simple Soil Moisture Sensor offers scientific accuracy and reliability at a price that makes large sensor networks economically viable. Its 70 MHz frequency minimizes salinity and structural effects, so it performs accurately in most soils or bottomless media. With its rugged epoxy housing, the TEROS 10 is designed to withstand the harshest field conditions, which means trouble-free measurements for the longevity of your research.