--- product_id: 554677490 title: "3/4\" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min" brand: "gredia" price: "Β£50.56" currency: GBP in_stock: true reviews_count: 5 category: "Gredia" url: https://www.desertcart.co.uk/products/554677490-3-4-water-flow-sensor-food-grade-switch-hall-effect store_origin: GB region: Great Britain --- # Food-grade, leak-proof seal G3/4" male thread fit 1-60L/min flow range 3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min **Brand:** gredia **Price:** Β£50.56 **Availability:** βœ… In Stock ## Summary > πŸ’§ Flow with confidence β€” precision meets durability in every drop! ## Quick Answers - **What is this?** 3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min by gredia - **How much does it cost?** Β£50.56 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/554677490-3-4-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 - β€’ **Leak-Proof Design:** Sealing ring guarantees firm connection and zero water leakage - β€’ **Wide Voltage Range:** Operates smoothly from DC 5V to 24V for versatile integration - β€’ **Precision Flow Control:** Accurate Β±2% measurement for reliable fluid monitoring - β€’ **Robust Food-Grade Build:** Durable, ROHS-certified plastic ensures safe contact with consumables - β€’ **Universal Compatibility:** Standard G3/4" male thread fits seamlessly with your existing setup ## Overview The 3/4" Water Flow Sensor is a high-precision hall effect flowmeter designed for fluid measurement between 1-60L/min. Crafted from food-grade, ROHS-compliant plastic, it features a G3/4" male thread for easy installation and a leak-proof sealing ring. Operating on DC 5-24V with Β±2% accuracy, it’s ideal for water heaters, coffee machines, purifiers, and smart campus equipment, delivering reliable, durable performance 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=(5.5*Q)Β±2%, Q=L/Min, error: Β±2% Working range: 1-60L/min Working voltage: DC 5-24 V Water Pressure: ≀1.2Mpa Liquid temperature: 0-100℃ Maximum current consumption: 15 mA(DC 5V) Wire length: 15 cm Size: 66mm x 38mm(L*W) Refer to the wiring: Red wire: VCC(+) Black wire: GND(-) Yellow wire: Signal output Package: 1 x G3/4 inch flowmeter Review: Seals fine on NPT threads with plenty of teflon tape, at least below 100 psi. If you're operating above that, don't buy desertcart grade sensors. It works down to 3.3v so you can hook it directly to a modern microcontroller such as the ESP32. Calibrate it yourself, though, if you want accuracy. Review: Perfect for my DIY water usage monitoring system. Accurate readings, durable build, and easy integration with my Arduino project. Threads were clean and fit standard fittings with no leaks. Will be ordering more ## Features - Connect to G3/4 inch male thread, hall effect - Flow range:1-60L/min, Water Pressure: ≀1.2Mpa - Working voltage: DC 5-24 V, F=(5.5*Q)Β±2%, 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 | B07MY6LFPH | | ASIN | B07MY6LFPH | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.4 4.4 out of 5 stars (40) | | Customer reviews | 4.4 4.4 out of 5 stars (40) | | Date First Available | 1 September 2019 | | Date First Available | 1 September 2019 | | Is Discontinued By Manufacturer | No | | Item Weight | 60 g | | Item model number | GR-S403 | | Item model number | GR-S403 | | Manufacturer | GREDIA | | Manufacturer | GREDIA | | Material | Plastic | | Package Dimensions | 12.9 x 11.3 x 4.1 cm; 60 g | | Package Dimensions | 12.9 x 11.3 x 4.1 cm; 60 g | | Part number | GR-S403 | | Size | G3/4" male thread | ## Images ![3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min - Image 1](https://m.media-amazon.com/images/I/6119f+Cq5cL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Review *by A***E on 17 March 2023* Seals fine on NPT threads with plenty of teflon tape, at least below 100 psi. If you're operating above that, don't buy Amazon grade sensors. It works down to 3.3v so you can hook it directly to a modern microcontroller such as the ESP32. Calibrate it yourself, though, if you want accuracy. ### ⭐⭐⭐⭐⭐ Review *by D***N on 26 May 2025* Perfect for my DIY water usage monitoring system. Accurate readings, durable build, and easy integration with my Arduino project. Threads were clean and fit standard fittings with no leaks. Will be ordering more ### ⭐ Review *by M***K on 7 June 2022* This flow sensor is very noisy and not accurate above 37l/ minute (10 Gallons/minute). It is 30% off, not really useful. I tried two, they were the same. The noise caused by the sensor impeller at medium to high flow is also very annoying because it is heard through the whole house as it is carried by the piping. Make sure you know what is the flow rate you are going to measure. If it is bellow 7 Gallons/minute you can give it a try. For higher flow rate look elsewhere. ## Frequently Bought Together - GREDIA 3/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-60L/min - Ximimark 2Pcs 1/2" Thread Plastic Electric Solenoid Valve Water Inlet Flow Switch Magnetic Water Air Normally Closed Tools DC 12V N/C 0.02 to 0.8mpa - GREDIA 3/4" DC 12V Solenoid Valve N/C Normally Closed Water Inlet Flow Switch --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/554677490-3-4-water-flow-sensor-food-grade-switch-hall-effect](https://www.desertcart.co.uk/products/554677490-3-4-water-flow-sensor-food-grade-switch-hall-effect) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*