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Product Name:Flow Sensor YF-S302-G1/4    

Working theory:


The water flow sensor is a device used to sense the water flow rate in a tank. There is a Hall element in the flow sensor. When liquid flows by the sensor, it drives the Hall element inside the sensor to rotate. By calculating the rotate speed of the element, the water flow sensor can give a precise outcome of the water flow rate passed by the pipe.


Product Application

This product can be used to monitor liquid flow rate in water machine, water heater, coffee machine, vending machine, water meter, medical testing machine and the like. They are widely applied in industrial equipment, agricultural equipment and household electrical appliances in the future


Product Specification


Electrical Characteristic

Technical Characteristic

Suffering Pressure


Mounting Position

Vertical ±5°

Operate Temperature

-40 °C ~ +80°C

Output Pulse Duty Cycle


Operate Voltage

DC3.5V ~24V

Max Output Pulse Voltage


Working Current

10mA Max

Min Output Pulse Voltage


Min Insulation Resistance

100m Ohm

 Electrical Life

1x 107(5Vdc,10mA) 

Flow Range


 Body Material


Flow Pulse

F=[23Q-3]±5% Q=L/min

 Application Scope

water dispenser etc. 

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Address: F/5, Building C, No.3 Industrial Estate, Hourui, Xixiang Street,Baoan District, Shenzhen, Guangdong, China.