(WCS-3) Water Content Sensor 3Overview The TrolMaster WCS 3 Water Content Sensor 3 is specifically designed to measure the moisture level (in percentage) of the grow medium. The WCS 3 can be used with the TrolMaster Aqua X (NFS 1), Aqua X Plus (NFS 3), Aqua X Pro (NFS 2), Hydro X Pro (HCS 2) and Tent X (TCS 1) control systems. Each WCS 3 sensor is a 3 prong Volumetric Water Content (VWC) sensor. To use the W CS 3, you will insert the 3 prong sensor into the grow medium such as
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