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Diameter: 13
To replace the battery
LiNK Wireless Communication - When Option Selected (Bluetooth low energy)*
50") (114
Davis 6440 Soil Moisture Sensor Weather Balloon Accessories Diameter: 13Davis 6440 Watermark soil humidity 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 four sensors to a single Leaf & Soil Moisture Temperature Station. Includes 15' (4. 6 m) cable.
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