Soil Moisture Sensor The Watermark Soil Moisture Sensor is an indirect, calibrated method of measuring soil water content. It is an electrical resistance type sensor. The Soil Moisture/Temperature Station converts the electrical resistance reading from the sensor into a calibrated reading of centibars of soil water suction with a range from 0 (wettest) to 200 (driest) centibars Soil Moisture Sensor The Watermark Soil Moisture Sensor is an indirect, calibrated method of measuring soil water content. It is an electrical resistance type sensor. The Soil Moisture/Temperature Station converts the electrical resistance reading from the sensor into a calibrated reading of centibars of soil water suction with a range from 0 (wettest) to 200 (driest) centibars Monitor Your Environment Use the Soil Moisture Sensor as part of your larger environmental monitoring system. Use With: Vantage Pro2 Must also connect to EnviroMonitor System EnviroMonitor Node Wireless Leaf & Soil Moisture/Temperature Station General Specifications Sensor Type Electrical Resistance Attached Cable Length 15' (4.6 m) Cable Type Watermark standard, two-wire, wires stripped and tinned Maximum Cable Length 800' (243 m) (18 AWG UF recommended) Housing Dimensions 7/8" diameter x 3" (22 mm diameter x 76 mm) Weight 3.6 oz. (103 g) Sensor Output Resolution 1 cb Minimum reading 0 cb Maximum reading 200 cb Update interval 77 to 90 seconds