RXW-T11-868 HOBOnet T11 Soil Temperature / Humidity Sensor

The HOBOnet T11 is a wireless sensor that works with the HOBOnet system to not only measure soil moisture (volumetric water content) with greater accuracy and precision, but also provides soil temperature measurements. Designed to withstand harsh environmental conditions, these durable sensors last up to 10 years, so you can leave them in the field for extended periods of time. Sharp stainless steel probes make installation easy, even on hard floors, and a large volume of influence provides better results and a more accurate view of soil moisture. The HOBOnet T11 is backed by more than 20 years of soil moisture research and features a proprietary 70 MHz frequency capacitance technology, which minimizes salinity and textural effects.

The HOBOnet system is a scalable and cost-effective wireless sensor network for web-enabled monitoring of field conditions for applications such as crop management, research, and greenhouse operations. And because it is wireless, you can implement a sensor network to easily monitor multiple points with a single system, while avoiding the risk of long cables that can interfere with field operations and are potentially vulnerable to nearby lightning. The sensors are easily connected to the network and data can be accessed through HOBOlink®, Onset's innovative cloud-based software platform.

We suggest you use the verification clip (see Supported Items, below). The verification clip provides a convenient way to confirm the operation and accuracy of soil moisture for the HOBOnet T11 and T12 sensors. Attaching this clip to a sensor provides a known soil moisture level to verify measurement accuracy, without having to test the sensor on real soils, which typically requires weighing soil samples and drying them in an oven.

Sensor characteristics

-Soil moisture (volumetric water content) and soil temperature measurements with a single device
-Sensor lasts up to 10 years in the field
-Higher volume of influence (1010 ml) in relation to sensor size, resulting in more accurate soil moisture measurements
-Easy installation with sharp stainless steel probes that are more resistant to damage / deterioration
-Less sensor-to-sensor variability

Wireless functions

-900 MHz wireless mesh self-healing technology
-Wireless range of 450 to 600 meters (1,500 to 2,000 feet) and up to five hops
-Up to 50 wireless sensors or 336 data channels per HOBO RX station
-Just press a button to join the HOBOnet wireless network
-Onboard memory to ensure no data is lost
-Powered by rechargeable AA batteries and built-in solar panel