---
product_id: 109954577
title: "- 3/8\" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min"
brand: "gredia"
price: "$26"
currency: NZD
in_stock: true
reviews_count: 8
category: "Gredia"
url: https://www.desertcart.nz/products/109954577-3-8-water-flow-sensor-food-grade-switch-hall-effect
store_origin: NZ
region: New Zealand
---

# 0.3-10L/min flow range DC 5-24V wide voltage compatibility Food-grade, ROHS-certified materials - 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min

**Brand:** gredia
**Price:** $26
**Availability:** ✅ In Stock

## Summary

> 💧 Flow smarter, not harder — precision sensing for the modern pro.

## Quick Answers

- **What is this?** - 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min by gredia
- **How much does it cost?** $26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/109954577-3-8-water-flow-sensor-food-grade-switch-hall-effect)

## Best For

- gredia enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Design:** Integrated sealing ring guarantees firm connections and zero water leakage under pressure ≤0.8Mpa.
- • **Plug & Play Integration:** Lightweight, compact (54x35x28mm), and easy to install with clear wiring for hassle-free setup.
- • **Robust & Safe Materials:** Crafted from food-grade plastic with ROHS compliance for health-conscious applications.
- • **Universal Compatibility:** G3/8 BSPT male thread fits seamlessly into water heaters, coffee machines, and purifiers.
- • **Precision Flow Monitoring:** Accurate ±3% measurement ensures reliable fluid control for your smart devices.

## Overview

This 3/8" Water Flow Sensor features a hall effect flowmeter with a precise 0.3-10L/min range and ±3% accuracy, operating safely under water pressure up to 0.8Mpa. Made from food-grade, ROHS-certified plastic, it ensures hygienic use in appliances like coffee machines and water purifiers. Its compact design and universal G3/8 BSPT thread make installation effortless, while the sealing ring prevents leaks, delivering reliable, real-time fluid monitoring for professional and DIY smart systems.

## Description

Our products are fine made with nice materials and good workmanship, strict quality control, guarantee in after service. The flowmeter is light and handy, easy to install. The sealing ring make the connection firm, the sealing performance is good and the problem of water leakage is avoided. More details about the flow meter: F=(23*Q)±3%, Q=L/Min, error: ±3% Working range: 0.3-10L/min Working voltage: DC 5-24 V Water Pressure: ≤0.8Mpa Liquid temperature: 0-100℃ Maximum current consumption: 15 mA(DC 5V) Wire length: 15 cm Size: 54mm x 35mm x 28mm(L*W*H) Refer to the wiring: Red wire: VCC(+) Black wire: GND(-) Yellow wire: Signal output Package: 1 x G3/8 inch flowmeter male thread

Review: Works flawlessly! - I made a project with a RPi5 to monitor my coolant for my laser cutter/etcher. I used this to make sure that I was getting flow from the coolant output of the laser to verify that there was no issues cooling the laser tube. I connect this sensor to a custom cable and 3D printed adapters for my coolant pipes. The system screen flawlessly tells me whether I have flow and how much!
Review: Good - Functions well, but does not come with technical specs.

## Features

- Connect to G3/8 inch BSPT male thread, hall effect
- Flow range:0.3-10L/min, Water Pressure: ≤0.8Mpa
- Working voltage: DC 5-24 V, F=(23*Q)±3%, Q=L/Min
- Material: food grade plastic, all raw materials conform to the ROHS test standard
- Wide application: It is mainly used in water heater, coffee machine, water purifier, drinking fountain, beverage machine, campus smart card equipment, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.2 out of 5 stars 134 Reviews |

## Images

![- 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min - Image 1](https://m.media-amazon.com/images/I/61EssyL7+4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works flawlessly!
*by J***S on May 26, 2025*

I made a project with a RPi5 to monitor my coolant for my laser cutter/etcher. I used this to make sure that I was getting flow from the coolant output of the laser to verify that there was no issues cooling the laser tube. I connect this sensor to a custom cable and 3D printed adapters for my coolant pipes. The system screen flawlessly tells me whether I have flow and how much!

### ⭐⭐⭐⭐ Good
*by E***O on October 8, 2025*

Functions well, but does not come with technical specs.

### ⭐⭐⭐⭐⭐ Calidad
*by P***X on August 20, 2025*

Buena calidad

## Frequently Bought Together

- GREDIA 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min
- CrocSee DC 12V Mini Food Grade Self Priming Diaphragm Fresh Water Transfer Pump 1.3LPM, Replacement Pump for Ice Maker, Coffee Machine, Water Dispenser

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-06*