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The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface.
This sensor sit in line with your water line, and uses a pinwheel sensor to measure how much liquid has moved through it.
The Vibration module based on the vibration sensor SW-420 and Comparator LM393 to detect if there is any vibration that beyond the threshold. The threshold can be adjusted by the on-board potentiometer.