YF-S402 Water Flow Sensor

SKU: OMP-S039 Category:



This water flow sensor is used to measure small quantity of water. It consists of a small turbine whose output signal is a series of digital pulses. The frequency of the pulses is proportional to the flow rate of the liquid passing through the sensor.


Minimum rated working voltage: DC 5~24V

Max. Working current: 15mA (DC 5V)

Working voltage range: DC 5~18V

Load capability: <= 10mA (DC 5V)

Working temperature: <= 80’C

Humidity range: 35%~90%RH

Water pressure: <1.75Mpa

Storage temperature: -25~80’C

Storage humidity: 25~95%RH

Flow range: 1~5L/min’

Frequency: 4380 pulse for 1L through the sensor

Dimensions: 2.28 in x 1.38 in x 1.06 in (5.8 cm x 3.5 cm x 2.7 cm)

Weight: 1.02 oz (29 g)