---
product_id: 89089341
title: "Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible"
brand: "hadronix"
price: "14118CFA"
currency: XOF
in_stock: false
reviews_count: 7
url: https://www.desertcart.sn/products/89089341-hadronix-1-4-quick-connect-food-grade-water-flow-meter
store_origin: SN
region: Senegal
---

# 3.5-12V wide voltage range Food-grade safe for drinking water 1/4" OD quick-connect fittings Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible

**Brand:** hadronix
**Price:** 14118CFA
**Availability:** ❌ Out of Stock

## Summary

> 💧 Measure smarter, live cleaner — water flow mastery at your fingertips!

## Quick Answers

- **What is this?** Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible by hadronix
- **How much does it cost?** 14118CFA with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/89089341-hadronix-1-4-quick-connect-food-grade-water-flow-meter)

## Best For

- hadronix enthusiasts

## Why This Product

- Trusted hadronix brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Flow Tracking:** Hall sensor tech delivers accurate 0.3-6 L/min flow measurement for smart water management.
- • **Robust Pressure Handling:** Operates reliably up to 116 PSI—built for demanding filtration and irrigation projects.
- • **Plug & Play Compatibility:** Includes JST-XH connector for seamless Arduino, Raspberry Pi, and RO system integration.
- • **Food-Grade Safety Guaranteed:** Certified safe for potable water, ensuring your DIY projects meet the highest health standards.
- • **Effortless Quick-Connect Setup:** Snap in and out with 1/4" OD fittings—installation as easy as LEGO building.

## Overview

The Hadronix HDRX-YF-S402B is a compact, food-grade water flow meter featuring a hall effect sensor and 1/4" quick-connect fittings for easy installation. It supports a wide voltage range (3.5-12V) and pressures up to 116 PSI, making it ideal for DIY automation with Arduino, Raspberry Pi, and reverse osmosis systems. Included JST-XH connectors enable immediate breadboard compatibility, empowering precise, real-time liquid flow monitoring for filtration, irrigation, and home automation projects.

## Description

The HDRX-YF-S402B is a food-grade liquid flow meter. This device is used to measure how much liquid has passed within a duration of time. It uses hall effect sensor and has a 1/4" quick-connect fittings for easy installation and removal. It has 3.5 - 12VDC supply voltage range and is perfect for use in DIY home automation, irrigation, filtration projects and more powered by Arduino and Raspberry Pi. Included with this flow meter is the JST-XH mating connector helps you to get started working with the HDRX YF-S402B right away. The included mated connector has a 2.54mm pitch which is perfect for bread board projects.

Review: Great price and works good - We never have any idea when our RO membrane should be changed. Our water is of fairly high quality before the RO so it’s hard to tell when the RO filter is letting stuff through. Now we can measure when to change. Attaching this to a counter (raspberry pi or others) can be a bit of a steep Learning curve but I found it a fun technical challenge. Once calibration is done this is meter is quite accurate. Built in push connections make installation as easy as LEGO.
Review: Works Great. - I am giving this five starts because it has worked great so far after some initial testing. I will be looking forward to using it to automate the watering of my tomato plants in the future.

## Features

- Food grade; Liquid passed through is safe to drink
- 1/4" OD Quick-Connect; Easy installation and removal, and works with most Reverse Osmosis filtration systems
- Includes 3-pin male 0.1" pitch JST-XH mating connector; Perfect for use on a breadboard with Arduino or Raspberry Pi
- 3.5 - 12 volt supply voltage range; Devices below 3.5 volts can be supported with a simple (not included) voltage divider circuit
- Works with pressures up to 116 pounds per square inch and flow rates of 0.3 - 6 liters per minute

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JWD4C46 |
| Date First Available | October 16, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.3 ounces |
| Manufacturer | Hadronix |
| Product Dimensions | 2.36 x 1.05 x 1.38 inches |

## Images

![Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible - Image 1](https://m.media-amazon.com/images/I/31MhlXx9bsL.jpg)
![Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible - Image 2](https://m.media-amazon.com/images/I/41Z1XEzQhIL.jpg)
![Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible - Image 3](https://m.media-amazon.com/images/I/41ZCqsfXSZL.jpg)
![Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible - Image 4](https://m.media-amazon.com/images/I/41h8lKY8e1L.jpg)
![Hadronix 1/4 Quick-Connect Food-Grade Water Flow Meter Hall Sensor HDRX-YF-S402B - Connectors Included - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible - Image 5](https://m.media-amazon.com/images/I/41wkb5Q1-CL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price and works good
*by M***0 on June 23, 2019*

We never have any idea when our RO membrane should be changed. Our water is of fairly high quality before the RO so it’s hard to tell when the RO filter is letting stuff through. Now we can measure when to change. Attaching this to a counter (raspberry pi or others) can be a bit of a steep Learning curve but I found it a fun technical challenge. Once calibration is done this is meter is quite accurate. Built in push connections make installation as easy as LEGO.

### ⭐⭐⭐⭐⭐ Works Great.
*by D***L on January 6, 2019*

I am giving this five starts because it has worked great so far after some initial testing. I will be looking forward to using it to automate the watering of my tomato plants in the future.

### ⭐⭐⭐⭐⭐ Just works.
*by E***K on July 16, 2019*

Simple to use. Just set up a rising edge interrupt to count the pulses and calculate flow volume and rate.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-03*