101020018 Seeed Technology Grove Water Sensor

This water sensor module is part of the Twig system. This sensor works by having a series of exposed traces connected to ground and interlaced between the grounded traces are the sense traces. The sensor traces have a weak pull-up resistor of 1 MR. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace.

• Low power consumption
• 20x20mm Twig module
• High sensitivity