---
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: "฿1135"
currency: THB
in_stock: true
reviews_count: 12
category: "Gredia"
url: https://www.desertcart.co.th/products/109954577-3-8-water-flow-sensor-food-grade-switch-hall-effect
store_origin: TH
region: Thailand
---

# DC 5-24V wide voltage 0.3-10L/min flow range G3/8 BSPT male thread 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min

**Brand:** gredia
**Price:** ฿1135
**Availability:** ✅ In Stock

## Summary

> 💧 Flow with confidence — precision meets durability in every drop!

## 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?** ฿1135 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/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.
- • **Robust & Food-Safe:** Crafted from ROHS-certified food-grade plastic for safe, durable use.
- • **Wide Voltage Range:** Operates smoothly from DC 5 to 24 volts, adaptable to various setups.
- • **Universal Compatibility:** Standard G3/8 BSPT male thread fits seamlessly into diverse water systems.
- • **Precision Flow Monitoring:** Hall effect sensor ensures ±3% accuracy for reliable fluid measurement.

## Overview

The 3/8" Water Flow Sensor is a compact, food-grade hall effect flowmeter designed for precise liquid measurement between 0.3 to 10 L/min. Featuring a universal G3/8 BSPT male thread and operating on DC 5-24V, it delivers ±3% accuracy with robust sealing to prevent leaks. Ideal for water heaters, coffee machines, purifiers, and smart campus equipment, it combines reliability with easy installation 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=(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 |
|---------------|-------|
| ASIN | B07MY652QC |
| Best Sellers Rank | #39,915 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Flowmeters |
| Date First Available | January 19, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | GR-402C |
| Manufacturer | GREDIA |
| Package Dimensions | 3.58 x 2.56 x 1.06 inches |

## 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/31VD5eI8ngL.jpg)
![3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min - Image 2](https://m.media-amazon.com/images/I/31p9OFasQtL.jpg)
![3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min - Image 3](https://m.media-amazon.com/images/I/41Lt-E4RYGL.jpg)
![3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min - Image 4](https://m.media-amazon.com/images/I/41RCh0xMevL.jpg)
![3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min - Image 5](https://m.media-amazon.com/images/I/51Qw4ohYtWL.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.

### ⭐⭐⭐⭐⭐ Review
*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 Thailand*
*Store origin: TH*
*Last updated: 2026-01-31*