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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.

News and Articles

A Brief History of Stevens' 116 Year Chart Recorder Legacy

The legendary mechanical chart recorder for environmental monitoring dates back to 1911, when John C. Stevens invented the Type A chart recorder. In 1906, J.C. Stevens was the Hydrographer for the USGS out of Portland, Oregon, and was soon promoted to District Engineer.  While with the USGS, he realized that hiring local citizens to observe and record height of water was not accurate or reliable.  He left the USGS and soon set out to design a machine capable of continuous graphic recording of river height.

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Stevens Equipment Records Historical Information During Tsunami

On the eve of the discontinuation of Stevens chart recorders, we are republishing the following article about the highest profile contribution that our products have made in their 116 year history. This article was originally published in the Stevens Water Monitor newsletter in 2007.

One of the longest lived products in water resource monitoring has been the Stevens’ chart recorder. In fact, the chart recorder, originally invented by Stevens’ founder and namesake J.C. Stevens in 1911, is the product that established Stevens’ leadership in the water monitoring business.

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Enhancements in Meteorological and Hydrological Models Using Soil Moisture Data

It has long been known that there is a strong relationship between soil water content and the health and yield of crops. But only in the past few decades has science quantified the specifics of these relationships. This research has expanded to develop a relationship between soil moisture levels and the impact on meteorological and hydrological models and forecasts.

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HydraProbe FAQs

Here are 7 questions and answers about using the Stevens HydraProbe.

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Introduction to Soil Surveys for Agronomic Use

The USDA's Introduction to Soil Surveys for Agronomic Use, entitled "From the Surface Down", is an introduction to soil types, horizons, and how they are measured. The intent of this publication is to increase user understanding of soils and acquaint them with the contents of a soil survey and supplemental interpretations that are important to agronomic programs.

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NRCS Urban Soil Primer

The Urban Soil Primer is intended to give planning officials and people who live in urban areas an introduction to soils. It provides information important in planning and managing land resources in a manner that helps to prevent or mitigate problems associated with sedimentation, contamination, runoff, and structural failure. In non-technical language, this publication describes the basic processes and functions common to all soils.

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The Stevens HydraProbe Inorganic Soil Calibrations

The Stevens HydraProbe can be calibrated to accommodate almost any inorganic soil regardless of clay content or organic matter. While the default calibrations are suitable for most soils, other published calibrations can be used to obtain a higher level of accuracy if specific textural information about the soil is available.

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