---
product_id: 151397032
title: "1/4\" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2）"
brand: "gredia"
price: "€ 33.30"
currency: EUR
in_stock: true
reviews_count: 12
category: "Gredia"
url: https://www.desertcart.de/products/151397032-1-4-quick-connect-water-flow-sensor-food-grade-switch
store_origin: DE
region: Germany
---

# Wide 5-24V voltage range Precise 0.3-6L/min flow detection Quick connect G1/4" fitting 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2）

**Brand:** gredia
**Price:** € 33.30
**Availability:** ✅ In Stock

## Summary

> 💧 Flow with confidence, connect with ease!

## Quick Answers

- **What is this?** 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2） by gredia
- **How much does it cost?** € 33.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/151397032-1-4-quick-connect-water-flow-sensor-food-grade-switch)

## 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

- • **Food-Grade Safety:** Crafted from ROHS-compliant, food-grade plastic—perfect for beverage and water systems.
- • **Dual Pack Advantage:** Two sensors included to double your monitoring power or backup your setup.
- • **Plug & Play Precision:** Quick-connect design for effortless installation and leak-proof sealing.
- • **Millennial-Grade Accuracy:** Hall effect sensor delivers ±3% flow measurement precision for reliable monitoring.
- • **Versatile Voltage Compatibility:** Operates seamlessly from DC 5 to 24 volts to fit diverse smart devices.

## Overview

This 1/4" quick connect water flow sensor features a hall effect switch with a precise 0.3-6L/min flow range and operates on a flexible 5-24V DC power supply. Made from food-grade, ROHS-compliant plastic, it ensures safe use in water heaters, coffee machines, and beverage systems. The pack of two offers reliable, leak-proof installation with quick-connect fittings, ideal for professional-grade fluid monitoring.

## 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=(38*Q)±3%, Q=L/Min, error: ±3% Working range: 0.3-6L/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: 2 x G1/4 inch flowmeter quick connect

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 a G1/4 inch tube, quick connector, hall effect, comes with 2 pieces
- Flow range:0.3-6L/min, Water Pressure: ≤0.8Mpa
- Working voltage: DC 5-24 V, F=(38*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 |
|---------------|-------|
| ASIN | B07RD4JXLY |
| Best Sellers Rank | #39,563 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Flowmeters |
| Date First Available | May 2, 2019 |
| Item Weight | 2.29 ounces |
| Item model number | GR-402BP2 |
| Manufacturer | GREDIA |
| Package Dimensions | 3.7 x 3.03 x 1.18 inches |

## Images

![1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2） - Image 1](https://m.media-amazon.com/images/I/61Aez6qWKmL.jpg)

## Available Options

This product comes in different **Size** options.

## 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.

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

Buena calidad

## Frequently Bought Together

- GREDIA 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2）
- Beduan 12V 1/4" Inlet Water Solenoid Valve Normally Closed for RO Reverse Osmosis Pure System

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-03*