YF-S403 3/4" Water Flow Hall Sensor 3/4 Inch External Thread 1-30L/min Flowmeter

  • Rs. 575.00 INR



  • The lowest rated working voltage: DC 4.5 5V - 24V.
  • Maximum Operating Current: 15 mA (DC 5V).
  • Working voltage range: DC 5 - 18V.
  • Load capacity: ≤ 10 mA (DC 5V).
  • Working temperature: ≤ 80 ℃
  • Working humidity range: 35%-90% RH (no frost)
  • Allow Pressure: 1.75Mpa
  • Storage temperature: -25 - + 80 ° C
  • Save Humidity: 25% - 95% RH
  • Flow range: 1-30L / min
  • External thread: 3/4 "
  • Size: Approx 6.2 * 3.5 * 4.1 cm
  • Output interface diameter: Ca. Outside 26mm, inside 12mm, 14mm.



  • Water flow sensor is mainly consists of plastic valve body, rotor assembly and hall current sensor. It is installed in the hot water inlet end for detecting water flow. When water through the flow rotor assembly, magnetic rotor will rotate and Speed will change as the flow change. Hall current sensor output corresponding pulse signal and feedback to controller, then the controller will control the flow. Can be used for water heaters, credit card machines, water vending machine, flow measurement device.
  • Light weight, small size, easy to install.
  • Inlaid with stainless steel impeller shaft, durable wearable.
  • Seal ring with the upper and lower force structure never leaks.
  • Non-violent shock, and chemical erosion.
  • Non-throwing or hitting.
  • Mounted vertically, should not exceed 5 degrees inclination.
  • Temperature of medium should not exceed 120° C


Wire Connections

  • Red: Positive(+)
  • Yellow: Signal output.
  • Black: Negative(-)


Best quality product available online at the cheapest price. 

Techtonics Promise:

  • If you don't have a HAPPY experience, we will make it right for you so that you're 100% satisfied.
  • Team Techtonics is happy when YOU are happy!
  • Send us an email if you need any assistance.


Techtonics Happiness Checklist

  • Right Product. No Surprises!
  • Safe payments via Credit/Debit Cards and/or PayPal®
  • On-time and safe Delivery
  • Real humans on our support helpdesk!
  • Tracking number for every order.

We use encrypted SSL certificates for 100% security.

We Also Recommend