High Precision Waterproof Soil Moisture Temp EC Sensor Transmitter Soil Fertilizer Detector Tester Condition: Item Type: Soil EC Sensor Material: ABS+Stainless Steel Color: As shown in the picture Size: Approx.13.5x4.5x1.4cm / 5.3x1.8x0.6in Weight: Approx.184g/6.5oz Power Supply: 12-24VDC Output Signal: RS485/4-20mA/0-5V/0-10V Installation Method: all buried or all probes inserted into the measured medium Protection Level: IP68 Response Time: <1s Conductivity Range: 0~10000μS/cm Conductivity Accuracy: 10μS/cm Moisture Measurement Range: 0~100% Moisture Measurement Accuracy: ±3% of reading (within 0~53% range) ±5% of reading (within 53~100% range) Temperature Measurement Range: -40 ° C ~ 80 ° C Temperature Measurement Accuracy: ±0.5 °C Measurable: EC, moisture, temperature Instructions: Surface Measurement Method: Select a suitable measurement location, avoid the stone, ensure that the steel needle does not touch the hard object, cut the surface layer according to the required measurement depth, maintain the original tightness of the soil, and hold the sensor. Vertically insert the soil, do not shake left and right when inserting, it is recommended to measure the average over a small range of one measuring point. Buried Measurement Method: Vertically excavate the pit with diameter >20cm/7.9in, insert the sensor steel needle horizontally into the pit wall at a given depth, fill the pit tightly, and stabilize it for a period of several days, several months or even Longer measurement and recording.