• Description

Water Flow Rate Sensor 1/8 inch

The water flow sensor measures the rate of a liquid flowing through it. The YF-S401 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!

Quick Spec

• Max Supply Voltage: 5-12V DC
• Water Flow Range: 0.3-6 L/min
• Inner Diameter: 4 mm
• Outside diameter: 7 mm
• Nozzle Size Standard : Type 18 (1/8" / 3.175mm) 
• Proof Water Pressure: <0.8 MPa
• Operating Current: 15 mA (DC 5V)
  
• Insulation Resistance: >100 MΩ
• Accuracy: ±5% 
• The Output Pulse High Level: >4.5 VDC (DC input voltage 5 V)
• The Output Pulse Low Level: <0.5 VDC (DC input voltage 5 V)
• Water-flow Formula: 1L = 5880 square waves
  
• Working Humidity Range: 35% ~ 90% RH (no frost)
• Dimension: 58 x 35 x 26 mm
• Weight: 30g

Flow Sensors we stock

Model	Port Size	Flow Rate
FS400A-G1	1" (25.4mm)	1-60L/min
YF-201	1/2" (12.7mm)	1-25L/min
YF-S401	1/8" (6.35mm)	0.3-6L/min

Wiring Diagram

Pinout

• Red: Power In
• Black: Ground
• Yellow: Signal Output

ESP32 Sample Code

Resources

• YF-S401 Datasheet
• Product Page
• Product Wiki
• Tutorial

Shipping List

• 1 x Water Flow Sensor 1/8 inch

Water Flow Rate Sensor YF-S401

• Brand: Generic
• Product Code: YF-S401
• Weight: 0.029kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	In Stock	UB059
Stellenbosch	In Stock	J4093 /J6091
Bulk Location	No Stock	J6 BOTTOM

We ship free of charge between branches to complete your order.

• R98.00 (Inc Tax: R112.70)