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RS485 4-20mA Soil Temperature Humidity Moisture Conductivity EC PH Sensor

Regular price $24.20 USD
Regular price Sale price $24.20 USD
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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


  • Measuring range: -40℃-80℃

  • Accuracy: ±5℃ (25℃)

  • Long-term stability: ≤0.1%℃/y

  • Response time: ≤15s


  • Measuring range: 0-100%RH

  • Accuracy: 2% within 0-50%, 3% within 50-100%

  • Long-term stability: ≤1%RH/y

  • Response time: ≤4s

Conductivity (EC)

  • Measuring range: 0-200000us/cm

  • Accuracy: 0-10000 us/cm range is ±3%; 10000-20000 us/cm range is ±5%

  • Long-term stability: ≤1%uS/cm

  • Response time: ≤1s


  • Measuring range: 3-9 PH

  • Accuracy: ±0.3PH

  • Long-term stability: ≤5%/year

  • Response time: ≤10S




  • Measuring range: 1-1999 mg/kg(mg/L)

  • Accuracy: ±2%FS

  • Response time: <1S

Optional types

Basic Parameters

Power supply


Max Power consumption

0.5W@24V DC

Protection class

IP68, long-term immersion in water use

Cable length

Default is 2m (can be customized)

Operating environment


Overall dimensions

45* 15 * 123mm



Functions and Features
(1) The sensor compact design, easy to carry, installation, operation and maintenance.
(2) reasonable structure design, stainless steel probe life assurance.
(3) soil less affected areas are widely used.
(4) High measurement accuracy, reliable performance, ensure proper operation
(5) fast response, high data transmission efficiency.

Applicable to the field of water-saving irrigation, greenhouse vegetables, flowers, gardening, grass pastures, soil-speed measurement, plant cultivation, scientific testing.

Provide config tool


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