It’s a YF-S201 Water Flow Measurement Sensor. This sensor sits in-line with your water line and contains a pinwheel sensor to measure how much liquid has moved out through it.
It also has an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed properly which allows the sensor to stay safe and dry.
By counting the pulses from the output of the sensor, one can easily calculate the water flow. Each and every pulse is approximately 2.25 milliliters of water.
- A simple, compact module that is easy to install.
- High-grade Sealing to ensure the best performance.
- Integrated with High-Quality Hall Effect Sensor.