Davis 6440 Soil Moisture Sensor

Sensor to measure the moisture level of the soil Watermark® soil moisture sensor uses electrical resistance to measure the moisture level of the soil. Does not require periodic maintenance during the growing season. Simply bury at the desired depth, then monitor moisture levels throughout the season. Add up to 4 sensors to a single Leaf & Soil Moisture/Temperature Station. Includes 15' (4.6m) cable.