Gravity: Water Pressure Sensor
Coordinate with a DFRobot Gravity IO Expansion Shield, the water pressure sensor can be plugged into an Arduino board, wiringfree. Put it with a Solenoid Valve, a Water Turbine Generator and other sensors, you can build a smart water control system. Briefly speaking, this water pressure sensor is a stethoscope to a water pipe. It will help you to diagnose whether there is water, how strong the water pressure is.