Water Flow Sensor (Sea) YFS402C Flowmeter G3/8 0.3- 10L/min 5-18V


In stock

SKU: 1031154
  1. Model: YF-S402C
  2. Specification: G3/8
  3. Input/output size: 15mm
  4. Operating voltage 5 to 18 V
  5. Analog Sensor
  6. Accuracy Up to 5%
  7. Water Proof Sensor


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Brand: Generic
Category: Water TDS, pH, Flow, Level and Pressure Sensor
Tags: Water Flow Sensor

The water flow sensor measures the rate of a liquid flowing through it. The YF-S402C water flow sensor consists of a plastic valve body, flow rotor, and hall effect sensor. It is usually used at the inlet end to detect the amount of flow. When liquid flows through the sensor, a magnetic rotor will rotate and the rate of rotation will vary with the rate of flow. The hall effect sensor will then output a pulse width signal. Connect it to a microcontroller and you can monitor multiple devices such as your coffee maker, sprinkler, or anything else, and control the water flow rate to suit your needs!


  1. Analog Sensor
  2. Accuracy Up to 5%
  3. Water Proof Sensor
  4. Standard 1/8″ Nozzle Size
  5. Max. Supported Water Flow: 10L/Min

Package Includes:

1 x Water Flow Sensor (Sea) YFS402C Flowmeter G3/8 0.3- 10L/min 5-18V



Work current


Operating voltage

5~18 V

Flow range

0.3 – 10L/min

Water pressure




Operating Temperature (°C):

0 to 80

Working Humidity Range

5%to90% RH

Input/Output size

15 mm

Shipping Weight 0.034 kg
Shipping Dimensions 5 × 4 × 2 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Questions and answers of the customers

  1. 0 votes
    Q Please mention Output voltage range answer now
    Asked by mlsanghani on August 23, 2023 3:55 pm

    You have o interface it Arduino or raspberry pi... Read more

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Country Of Origin: China