Ifthereisnostockavailablewhenyouplaceanorder,pleasecontactustoincreasethestock.Thankyou. Important Reminder The measurement of NPK adopts the general rapid detection method, so there are certain error, Use with caution for planting reference. However, the sensor supports the function of writing NPK data. You can use standard instruments to measure NPK then write in to provide data for monitoring system. RS485 4-20mA Soil Temperature Humidity Moisture Conductivity EC PH Sensor CWT-SOIL sensor is for soil temperature and moisture, PH, conductivity (EC),measurement, compared with the original German high-precision sensors and soil drying method of weighing the actual calibration, high precision, fast response, stable output. By the soil salt content of small, suitable for all kinds of soil. Long-term buried in the soil, resistant to long-term electrolysis, corrosion resistance, vacuum potting, completely waterproof. Soil parameters measuring Measure items Parameters Temperature Measuring range: -40-80 Accuracy: 5(25) Long-termstability: 0.1%/y Response time: 15s Humidity Measuring range: 0-100%RH Accuracy: 2% within 0-50%, 3% within 50-100% Long-termstability: 1%RH/y Response time: 4s Conductivity(EC) Measuring range: 0-20000us/cm Accuracy: 3% (0-10000 us/cm);5% (10000-20000 us/cm) Long-termstability: 1%uS/cm Response time: 1s PH Measuring range: 3-9 PH Accuracy: 0.3PH Long-termstability: 5%/year Response time: 10S Nitrogen Phosphorus Potaium Measuring range: 1-1999 mg/kg(mg/L) Resolution1 mg/kg(mg/L) Response time: Basic parameters Power supply DC4.5-30V Max Power consumption 0.5W@24V DC Protection cla IP68, long-term immersion in water use Cable length Default is 2m (can be customized) Operating environment -40-80 Overall dimensions 45* 15 * 123mm Output RS485/4-20mA/0-5V/0-10V Functions and Features(1) The sensor compact design, easy to carry, installation, operation and maintenance.(2) reasonable structure design, stainle steel probe life aurance.(3) soil le affected areas are widely used.(4) High measurement accuracy, reliable performance, ensure proper operation(5) fast response, high data transmiion efficiency.Applicable to the field of water-saving irrigation, greenhouse vegetables, flowers, gardening, gra pastures, soil-speed measurement, plant cultivation, scientific testing. Provideconfigtool 4.3 inch HMI Touch Screen features: 4.3 inch HMI Touch Screen, 480*272 resolution Power: 9-30V DC Connect only one RS485 soil sensor, work with H-S, TH-S, THC-S, THPH-S, CPH-S, THCPH-S,NPKTHPH-S, NPKPH-S, NPKPHC-S, NPKPHCTH-S, don't work with PH-S, NPK-S Dashboard and curve for monitoring of soil sensor Support set calibration on screen Support 1900 logs, settable interval of logging, can export logs to SD card NOTE: No power adapter is included in standard packing, if need power adapter. Click below image to buy, we provide EU/US/UK/AU plug options: