Teros 21 Soil Water Potential Sensor


SENSOR ONLY  РPlease note, the Teros21 is just a sensor and will need to be connected to a data-logging device for the user to take readings, assign SDI-12 addresses, and more.

This item is made to order from METERGROUP and has a 10-14 day lead time.

These same Teros21 sensors will be compatible with Pinnacle Sensor Nodes and Pinnacle Brain that will enable 24/7 data logging, historical trend analysis, equipment control, etc. So any sensors you purchase now can be used for the full controller later. user to view the sensor data.


  • Easy to use
  • Improved accuracy comes from the six-point factory calibration
  • Tough, long-lasting body
  • No recalibration
  • Low salt sensitivity
  • Affordability
  • Excellent range (sensitivity from -5 kPa all the way to air dry [-100,000 kPa])
  • Onboard temperature measurement
  • Plug and play capability
  • Use with the Pinnacle platform to access data 24/7
  • SDI-12 compatible
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Teros 21

A true full-range water potential sensor that’s low maintenance and low cost

The TEROS 21 water potential sensor is incredibly easy to use. It requires no maintenance, and it’s accurate enough for most applications. In fact, the TEROS 21 provides an even more accurate soil moisture picture than measure water content alone. A water content sensor only shows the percentage of water in the soil, but add a TEROS 21 water potential sensor, and you’ll know if that water is available to the plants and where it will move. Plus, unlike water content, matric potential isn’t dependent on soil type, so you can compare moisture between different sites. Not only that, the TEROS 21 is surprisingly affordable, and the new Gen 2 version boasts an improved circuit, a more robust microprocessor, and an improved measurement range. It now measures all the way from near saturation to air dry (-5 to -100,000 kPa) making it the worlds first true full range water potential sensor.

Additional information

Weight 1 lbs
Cable Length

5M, 10M, 15M, 20M


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