---
product_id: 110072333
title: "GREDIA 1/4\" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min"
brand: "gredia"
price: "$17.18"
currency: USD
in_stock: true
reviews_count: 12
category: "Gredia"
url: https://www.desertcart.us/products/110072333-gredia-1-4-quick-connect-water-flow-sensor-food-grade
store_origin: US
region: United States of America
---

# Wide 5-24V DC voltage range Precise 0.3-6 L/min water flow range Quick connect G1/4" tube fitting GREDIA 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min

**Brand:** gredia
**Price:** $17.18
**Availability:** ✅ In Stock

## Summary

> 💧 Flow Smart, Connect Fast — The Sensor Your System Deserves!

## Quick Answers

- **What is this?** GREDIA 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min by gredia
- **How much does it cost?** $17.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/110072333-gredia-1-4-quick-connect-water-flow-sensor-food-grade)

## 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

- • **Effortless Quick Connect:** Snap into your system with a secure G1/4" fitting—no leaks, no hassle.
- • **Precision Flow Monitoring:** Accurate ±3% measurement ensures you never miss a drop from 0.3 to 6 L/min.
- • **Food-Grade Safety Certified:** Crafted from ROHS-compliant, food-grade plastic for pure, safe fluid handling.
- • **Compact & Lightweight Design:** At just 0.7 oz and pocket-sized, it fits seamlessly into any setup without bulk.
- • **Versatile Voltage Compatibility:** Operates smoothly across 5-24V DC, perfect for diverse smart devices.

## Overview

The 1/4" Quick Connect Water Flow Sensor is a compact, food-grade hall effect flowmeter designed for precise liquid flow measurement between 0.3 and 6 L/min. Featuring a secure G1/4" quick connector, it supports a wide DC voltage range (5-24V) and operates reliably under water pressure up to 0.8MPa. Ideal for coffee machines, water purifiers, and smart campus equipment, it delivers ±3% accuracy with leak-proof sealing and lightweight durability.

## 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: 1 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
- 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 | B07MY6XXYN |
| Best Sellers Rank | #37,565 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Flowmeters |
| Date First Available | January 19, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.704 ounces |
| Item model number | GR-402B |
| Manufacturer | GREDIA |
| Package Dimensions | 3.03 x 2.91 x 1.14 inches |

## Images

![GREDIA 1/4" Quick Connect Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min - Image 1](https://m.media-amazon.com/images/I/61z8BC1L+OL.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
- DIGITEN DC 12V 1/4" Inlet Feed Water Solenoid Valve Quick Connect N/C normally Closed no Water Pressure
- DIGITEN 1/4 Quick Connect 0.3-10L/min Water Hall Effect Flow Sensor Meter

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-25*