Tip: if you're looking for drivers, manuals, or other technical support resources, search in the Stevens support site instead.




Teledesign TS4000 900MHz UHF/VHF

True cloud-based sensor configuration, logging, reporting and data analysis all-in-one.


Shark (RS232/RS485 Bluetooth Serial Adapter)


A cloud-based interface to configure hardware, visualize data, analyze measurements, manage alarms, calculations, and set up data routing.

MEASUREMENTS TO MIND (M2M) is a growing suite of Stevens products that embraces cloud-computing with an all-inclusive vision of shortening the communication path from the sensors to data on-line. That is, what the sensors MEASURE the MIND sees.

The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.


SOLO (smart SDI-12 power manager)
JL-2 (solar charge controller)
Power Supplies
Solar Panels

Smart SDI-12 power manager that also provides remote power cycling.

The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.

The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.

Soil Sensors

Moisture, EC (Salinity), Temperature

Stevens HydraProbe

HydraProbe is a rugged soil sensor with patented technology that provides continual, consistent accuracy measuring a number of parameters including the three most significant soil parameters simultaneously— moisture, salinity and temperature.

As the most scientifically researched soil sensor available, it has been depended on by the USDA, NOAA, leading irrigation companies, and many universities for over 10 years. HydraProbe has been engineered to be exceptionally rugged and will provide data you can trust year after year.

  • RELIABLE: Continual, long-term data without calibration.
  • RUGGED: Durable stainless steel tines, fully potted components, compact sealed design and a 5-year warranty.
  • SIMPLE: Set it and forget it.
  • ACCURATE: Consistent research-grade accuracy every season, every location.

Available in SDI-12 and analog versions.

HydraProbe Field Portable

Take soil measurements anywhere, without the effort or expense of setting up a permanent soil monitoring system. Your smartphone communicates wirelessly with the HydraProbe using an ad-hoc wi-fi network created by the HydraProbe Field Portable.

Simply insert the probe into the soil, and tap on the “Sample” button in the app. The location of each measurement is recorded along with the soil measurement data. All data can be saved and emailed as a .CSV for analysis in Excel.

Hydra Data Reader

The Stevens Hydra Data Reader acquires, displays, and logs data directly from the analog HydraProbe Sensor. The Hydra Data Reader converts raw HydraProbe voltages directly into soil moisture, salinity, and temperature readings without requiring any further processing or calibration. Data can then be logged, stored and downloaded to a PC for analysis, or the unit may be put in direct read only mode.


The patented HydraProbe sensor is also available integrated with a pro-quality GPS in a portable, rechargeable package. POGO is ideal for golf and sports turf applications for instantaneous measurement of soil moisture, salinity (EC) and temperature. Data is logged is displayed in real-time on a free app for smartphones or tablets, and can be synchronized with the cloud-based POGO Turf Pro software, which provides consultant-level, detailed analysis of data, reports, and alerts.

Moisture and Temperature

Moisture Profiling

Stevens GroPoint Profile

The highly accurate Stevens GroPoint Profile provides cost-effective soil moisture measurement over multiple depths using a single probe, eliminating the cumbersome excavation required for multiple sensors placed at different depths. The Stevens GroPoint Profile can be deployed in irrigation-sensitive zones to enable full control of precision irrigation needs, providing an understanding of water movement through the soil.

The sleek, lightweight design installs quickly with minimal soil disruption using a pilot rod and slide hammer tool. Designed for vertical installation, the sensor takes measurements over multiple soil layers, with each measurement zone providing the average volumetric soil
moisture content over a 15 cm range (approximately 6 inches).

Matric Potential


The TensioMark measures the soil water potential or matric potential. The soil matric potential is the pressure it takes to pull water out of the soil and is an indicator of stress to plants and crops, can be used to determine soil water fluxes and available water held in the soil. Water equilibrates with the ceramic tip portion of the sensor where the heat capacitance is measured. The matric potential is then calculated from the thermal storage properties of the soil, based on a sensor specific calibration.

Because the TensioMark bases its measurements on the thermal properties of the soil, it does not need to be calibrated by the user, does not need to be filled with water, has excellent accuracy and stability, and a much larger range than any conventional tensiometer.

  • Can have ranges that can capture very dry conditions.
  • Quick response to changes on soil moisture.
  • Low inner sensor hydrological hysteresis and variability.
  • Not sensitive to soil salinity.
  • Quick equilibration time.
  • Not damaged by frost.
  • Maintenance-free (no filling required).
  • No calibration needed.

Soil Temperature

Smart Temp

Smart Temp is a high precision digital temperature sensor that features the ability to automatically sample temperature and calculate minimum, maximum, and average temperatures on a flexible time scale.

It features fully-potted components, robust PVC Type II housing, plus a durable 316 grade stainless steel tine for easy soil insertion

SDI-12 output provides universal compatibility with any SDI-12-enabled data logger and low power applications, or use the standard SDI-12 command set over an RS-485 physical interface for applications that require long cable runs or many sensors.