Product Images are shown for illustrative purposes only and may differ from actual product.

YF-S402 G1/4" PVC Water Flow Sensor


Write a review | 1 reviews

  • Stock: 5

    Availability: InStock priceValidUntil: 2026-05-10

  • Brand: Generic
  • SKU: 1632 | DAB255

Availability: InStock priceValidUntil: 2026-05-10

  • Rs. 327.45 (inc GST)
    Rs.277.50 + GST

    Qty :

GST Invoice: Available for all purchases; eligible for input tax credit.

Delivery: 2–8 days across India. No MOQ required.

Bulk Orders: Need a larger quantity or item not in stock? Email: dnatechindia [at] gmail.com

Import Service: We import a wide range of electronic components on request.

YF-S402 G1/4" PVC Water Flow Sensor

This water flow sensor is basically 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. That digital signal, whose frequency is in the range between 0Hz and 100Hz, can be read directly through one of the digital input/output pins of a microcontroller.

Specifications

  • 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 (no frost);
  • 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)
  • Thread Size : G1/4"

Features

  • Lightweight, Small in size, Easy to install;
  • With stainless steel axis in the wheel, abrasion resistant;
  • Sealing ring design to prevent water leaks;
  • Compliant with RoHS standard

Application

  • Suitable for water heater
  • POS terminal
  • automatic water dispenser 

Extra Information
Country of Origin China
Imported By ElectroSource Private Limited

Reviews (1)

Write a review

Note: HTML is not translated!
    Bad           Good
CAPTCHA verification code

Frequently Asked Questions

Do you provide a GST bills?
Yes we provide GST Bill by the name of DNA Solutions. You will receive a GST compliant invoice for your records. You can take GST benefit.
What is your return / replacement policy?
Returns/replacements depend on the item type and condition. If there’s an issue, contact us with photos/videos and we’ll guide you as per policy.
How long does dispatch take?
In-stock items typically dispatch within 1–2 working days. If any item needs sourcing, we’ll update you with the expected timeline before dispatch.
What payment methods do you accept?
We accept UPI, cards, netbanking, and other checkout options shown on the payment page.
What if I need a component that is not listed on your website?
Contact us with the part number or requirement — we may be able to source it or suggest an equivalent.
Will you send the same brand/manufacturer every time?
For some passive components, brand may vary based on availability. If you need a specific brand or matching lot, mention it before ordering and we’ll advise availability.
View all FAQs →

NEW Products

Product Page : New Products

Meanwell SMPS LRS-100-24

Meanwell SMPS LRS-100-24

Meanwell LRS-100-24 DIN Rail Power SupplyMeanwell LRS-100-24 AC-DC power supply with high efficiency..

Rs.1,104.48 (inc GST)
Rs.936.00 + GST

SKU: 2788 | DAE348
Stock: 5
TVS Diode P6KE18CA

TVS Diode P6KE18CA

P6KE18CA Bi-Directional TVS Diode P6KE18CA TVS Diode, 600W power, protects circuits from voltage spi..

Rs.4.54 (inc GST)
Rs.3.85 + GST

SKU: 3319 | DAD414
Stock: 10
HLW8032 Energy Metering IC

HLW8032 Energy Metering IC

HLW8032 High Precision Energy Metering IC HLW8032 Energy Metering IC for precise energy measurements..

Rs.48.38 (inc GST)
Rs.41.00 + GST

SKU: 2622 | DAC755
Stock: 100
BAV99 SOT23 High Speed Dual Surface Mount Switching Diode

BAV99 SOT23 High Speed Dual Surface Mount Switching Diode

BAV99 High Speed Dual Surface Mount Switching Diode BAV99 SOT23 Diode for high-speed switching with ..

Rs.5.90 (inc GST)
Rs.5.00 + GST

SKU: 7491 | DAD136
Stock: 50

Have You Seen

Product Page : Have You Seen

MCP23S17 I/O Expander IC with SPI Interface

MCP23S17 I/O Expander IC with SPI Interface

MCP23S17 I/O Expander IC with SPI InterfaceThe MCP23S17 provides 16-bit, general purpose parallel I/..

Rs.320.96 (inc GST)
Rs.272.00 + GST

SKU: 653 | DAA046
Stock: 3
Write review
Hongfa HF41F/24-ZS 24 Volt Relay

Hongfa HF41F/24-ZS 24 Volt Relay

Hongfa HF41F/24-ZS 24 Volt SPST RelayHongfa HF41F/24-ZS Relay, SPST design, 24 VDC voltage, 6 Amp cu..

Rs.116.23 (inc GST)
Rs.98.50 + GST

SKU: 8722 | DAI144
Stock: 50
74HC574 DIP IC

74HC574 DIP IC

74HC574 Octal D-Type Flip-Flop IC 74HC574 DIP IC for data storage with 3-state outputs, 15 LS-TTL lo..

Rs.29.50 (inc GST)
Rs.25.00 + GST

SKU: 3745 | DAF712
Stock: 5
Write review
3 Pin Male Right Angle Header 5.08 mm pitch (Combicon Connector)

3 Pin Male Right Angle Header 5.08 mm pitch (Combicon Connector)

Combicon 3 Pin Right Angle Male Header Connector XY-2500 F-B 5.08 series 3 Pin Right Angle Male hea..

Rs.17.35 (inc GST)
Rs.14.70 + GST

SKU: 2723 | DAE240
Stock: 10

Related Products

Turbidity Sensor

Turbidity Sensor

Turbidity Sensor ModuleTurbidity SensorTurbidity Measurement is one of the key test in water quality..

Rs.1,178.82 (inc GST) Rs.736.32
Rs.999.00 + GST

SKU: 518 | DAA792
Stock: 1
18650 Battery Holder for 3 Battery

18650 Battery Holder for 3 Battery

18650 Battery Holder for 3 BatteryThis battery holder connects three 18650 Batteries in Series.Featu..

Rs.43.90 (inc GST)
Rs.37.20 + GST

SKU: 1109 | DAB283
Stock: 15
YF-S402 G1/4" PVC Water Flow Sensor

YF-S402 G1/4" PVC Water Flow Sensor

YF-S402 G1/4" PVC Water Flow SensorThis water flow sensor is basically a small turbine whose output ..

Rs.327.45 (inc GST)
Rs.277.50 + GST

SKU: 1632 | DAB255
Stock: 5
MAX6675ISA K-Thermocouple to Digital Converter

MAX6675ISA K-Thermocouple to Digital Converter

MAX6675 K-Thermocouple to Digital Converter IC MAX6675ISA K-Thermocouple to Digital Converter IC wi..

Rs.305.62 (inc GST)
Rs.259.00 + GST

SKU: 3152 | DAE837
Stock: 25
USB 3.1 Type-C 4 Pin Female Connector With Data And Charging Port – Panel Mount

USB 3.1 Type-C 4 Pin Female Connector With Data And Charging Port – Panel Mount

USB 3.1 Type-C 4 Pin Female Connector Panel Mount USB 3.1 Type-C 4 Pin Female Connector for data tr..

Rs.54.52 (inc GST)
Rs.46.20 + GST

SKU: 8127 | DAH633
Stock: 30
IP2723T Fast-Charge Controller IC

IP2723T Fast-Charge Controller IC

IP2723T Fast-Charge Controller ICIP2723T Fast-Charge Controller IC for USB ports with multi-protocol..

Rs.51.57 (inc GST)
Rs.43.70 + GST

SKU: 10319 | DAJ126
Stock: 0
Write review
DFRobot Gravity: Lab Grade Analog EC / Electrical Conductivity Sensor Kit for Water Quality Monitoring (K=1)

DFRobot Gravity: Lab Grade Analog EC / Electrical Conductivity Sensor Kit for Water Quality Monitoring (K=1)

DFRobot Gravity: Lab Grade Analog EC / Electrical Conductivity Sensor Kit for Water Quality Monitori..

Rs.7,668.00 (inc GST)
Rs.6,498.31 + GST

SKU: 10362 | DAJ194
Stock: 5
Write review
DFRobot Gravity: Analog Water Pressure Sensor

DFRobot Gravity: Analog Water Pressure Sensor

DFRobot Gravity: Analog Water Pressure SensorDFRobot Gravity: Analog Water Pressure Sensor, supports..

Rs.2,051.78 (inc GST)
Rs.1,738.80 + GST

SKU: 10365 | DAJ197
Stock: 5

Tags: water flow sensor, flow sensor, digital sensor