1It is less affected by the salt content of the soil, accurate in measurement and sensitive in response. It is suitable for all kinds of soil. 2It is mainly used for the measurement of soil temperature and moisture. 3It is equipped with high-precision sensor, which has quick response and stable output. 4Made of high quality ABS material, it can be buried in the soil for a long time, resistant to long-term electrolysis, corrosion, vacuum filling and sealing, completely waterproof. 5The analog output can be current type or voltage type, and the wiring can be three wire system. 6It can be widely used in scientific experiments, water-saving irrigation, greenhouse, soil rapid measurement, plant culture, sewage treatment, grain storage and measurement of moisture content and temperature of various particles.Condition: 100% Item Type: Soil Moisture Sensor Material: ABS, 316 Stainless Steel Power Supply: 12-24V DC Moisture Measurement Range: 0-100% Storage Environment: -45-115 Moisture Accuracy: 3% (In Range of 0 - 53% ) / 5% (In Range of 53 - 100%) Response Time: Cable Color Description Power Supply Brown Power Supply Positive (12-24V DC) Black Power Supply Negative Communication White Humidity Voltage / Current Output is Positive Gray Temperature Voltage / Current Output is Positive Blue NC Yellow NC 1 x Soil Moisture Sensor1 x Instruction Manual1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.