Davis Instruments Soil Moisture Sensor
The highly accurrate Watermark® soil moisture sensor uses electrical resistance to measure the moisture level of the soil. Simply bury at the desired depth, then monitor moisture levels throughout the season. The unit does not require periodic maintenance during the growing season and includes a 4.6m (15') burial capable cable.
Compatible with Vantage Pro and Vantage Pro2. The Soil Moisture Sensor must be connected via a Leaf & Soil Moisture/Temperature Station (#6345).
The Soil Moisture sensor can be connected to a single Davis Instruments Leaf & Soil Moisture/Temperature Station (#6345AU Add up to 4 sensors to a single station) or via a third party interface to other home automation equipment.
Compatible with both the original Vantage Pro and also the Vantage Pro2.