The YF S201C water flow sensor is a simple sensor for measuring the flow of liquids. YF S201C consists of a pinwheel that has a magnet and Hall sensors.

In a simple way, by counting the pulses of a hanging fan, you can measure the flow of liquids. With this method, the electronic part of the sensor has no contact with water.

• The appearance of this product is light and flexible, small in size, and easy to install.
• The impeller with stainless steel beads inside is always worn.
• A seal using the upper and lower force structures will never leak.
• Hall elements were imported from Germany and encapsulated with potting to prevent water and never aging.
• All raw materials are in line with ROSH testing standards.
• Red VCC, black GND, and yellow frequency signal types
• Signal type: NPN square frequency
• Size 54 (Length) * 25 (1/2″) mm
• The quality of the very rigid plastic is good.
• the impeller has an embedded metal ball to protect against wearable
• A sealed side can prevent water leakage into the circuit.
• High-quality internal hall sensor, glue sealed against wearable
• 1.75Mpa withstanding pressure, temperature and humidity range: 80°C and 35%-90%RHThe device has three wires:

• red: supply voltage from 5 V to approximately 24 V
• black – ground
• yellow-pulse output signal