--- product_id: 724932110 title: "1/2\" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min" brand: "gredia" price: "£0.78" currency: GBP in_stock: false url: https://www.desertcart.co.uk/products/724932110-1-2-water-flow-sensor-food-grade-switch-hall-effect store_origin: GB region: United Kingdom --- # 1-30 L/min flow range Wide 5-24V operating voltage Precision ±2% accuracy 1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min **Brand:** gredia **Price:** £0.78 **Availability:** ❌ Out of Stock ## Summary > 💧 Flow with precision, power your smart hydration! ## Quick Answers - **What is this?** 1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min by gredia - **How much does it cost?** £0.78 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/724932110-1-2-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 - • **Food-Grade Safety:** Crafted from ROHS-compliant, food-grade plastic—safe for your coffee machine, water purifier, or drinking water system. - • **Compact & Lightweight:** At just 40g and 62x36x36mm, it fits effortlessly into tight spaces without compromising durability. - • **Precision Flow Control:** Experience ultra-accurate water flow measurement with ±2% error margin, ensuring flawless system performance. - • **Leak-Proof Installation:** Includes a high-quality sealing ring for a rock-solid, leak-free connection every time—no mess, no stress. - • **Versatile Voltage Compatibility:** Seamlessly integrates with DC 5-24V systems, perfect for diverse smart devices and industrial setups. ## Overview The GREDIA 1/2" Water Flow Sensor is a compact, food-grade hall effect flow meter designed for precise water flow measurement between 1-30 L/min with ±2% accuracy. Operating on a versatile 5-24V DC range and supporting up to 1.75 Mpa water pressure, it’s ideal for smart water heaters, coffee machines, and purifiers. Its leak-proof design and ROHS-compliant materials ensure safe, reliable performance in professional and home environments. ## Description Our products are made with excellent material and excellent workmanship, strict quality control and after-sales service. The flow meter is light, convenient and easy to install. The sealing ring will ensure the connection is solid, sealing performance is good, avoiding the leakage issue. Flow Meter Details: F=(7.5*Q)±2%, Q=L/min, Error: ±2% Operating Range: 3.3 - 9.8 gal/min (1 - 30 L/Operating voltage: DC 5-24V Water Pressure: ≤1.75 Mpa Liquid temperature: 0-100℃ Maximum current consumption: 15mA (DC 5V) Wire length: 15cm Size: 62mm x 36mm x 36mm (LxWxH) Refer to the wiring: Red wire: VCC(+) Black wire: GND(-) Yellow: Signal output Package: 1 x G1/2" Flow Meter ## Features - Connects to G1/2" BSPT Male Thread, Hole Effect - Flow range: 3.3 - 9.8 gal/min (1 - 30 L/min), Water pressure: ≤1.75 Mpa - Operating voltage: DC 5-24 V, F=(7.5*Q)±2%, Q=L/min - Material: food grade plastic, all raw materials comply with ROHS testing standards - Wide application: Mainly used for water heaters, coffee machines, water purifiers, drinking water, drinks, campus smart card equipment, etc ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | GREDIA | | Part number | GR-201 | | Item Weight | 40 g | | Package Dimensions | 8.4 x 7.6 x 4.1 cm; 40 g | | Is Discontinued By Manufacturer | No | | Size | G1/2" male thread | | Material | plastic | | Batteries Included | No | | Batteries Required? | No | ## Images ![1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min - Image 1](https://m.media-amazon.com/images/I/61pUNNCWDAL.jpg) ![1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min - Image 2](https://m.media-amazon.com/images/I/61D8ujyEenL.jpg) ![1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min - Image 3](https://m.media-amazon.com/images/I/61fM7z5z0YL.jpg) ![1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min - Image 4](https://m.media-amazon.com/images/I/71UXqVReHhL.jpg) ![1/2" Water Flow Sensor Food Grade Switch Hall Effect Flow Meter Counter 1-30L/min - Image 5](https://m.media-amazon.com/images/I/61fM7z5z0YL.jpg) ## Frequently Bought Together - GREDIA 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/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 1/2" DC 12V Solenoid Valve N/C Normally Closed Water Inlet Flow Switch --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/724932110-1-2-water-flow-sensor-food-grade-switch-hall-effect](https://www.desertcart.co.uk/products/724932110-1-2-water-flow-sensor-food-grade-switch-hall-effect) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-24*