--- product_id: 160091751 title: "GREDIA 1/4\" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2）" brand: "gredia" price: "$33.05" currency: USD in_stock: true reviews_count: 3 category: "Gredia" url: https://www.desertcart.us/products/160091751-gredia-1-4-water-flow-sensor-food-grade-switch-hall store_origin: US region: United States of America --- # DC 5-24V wide voltage 0.3-6 L/min flow range G1/4 inch male thread fit GREDIA 1/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-6L/min (Pack of 2） **Brand:** gredia **Price:** $33.05 **Availability:** ✅ In Stock ## Summary > 💧 Flow with confidence, measure with precision! ## Quick Answers - **What is this?** GREDIA 1/4" 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?** $33.05 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/160091751-gredia-1-4-water-flow-sensor-food-grade-switch-hall) ## 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-certified food-grade plastic for safe water and beverage use. - • **Dual-Pack Convenience:** Two flowmeters included to double your installation or backup options. - • **Leak-Resistant Design:** Sealing ring enhances connection firmness to minimize water leakage risks. - • **Precision Flow Monitoring:** Hall effect sensor ensures ±2% accuracy for reliable fluid measurement. - • **Versatile Voltage Compatibility:** Operates seamlessly between DC 5-24V, fitting diverse setups. ## Overview The GREDIA 1/4" Water Flow Sensor is a compact, food-grade hall effect flowmeter designed for precise liquid flow measurement between 0.3 to 6 L/min. Featuring a G1/4 inch male thread for easy installation, it supports a wide DC voltage range (5-24V) and maintains ±2% accuracy. Ideal for water heaters, coffee machines, and purifiers, this pack of two sensors offers reliable, leak-resistant performance for professional and smart fluid management. ## 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)±2%, Q=L/Min, error: ±2% Working range: 0.3-6L/min Working voltage: DC 5-24 V Water Pressure: ≤0.8Mpa Liquid temperature: 0-100℃ Maximum current: 15 mA(DC 5V) Wire length: 15 cm Size: 58mm x 34mm x 27mm(L*W*H) Refer to the wiring: Red wire: VCC(+) Black wire: GND(-) Yellow wire: Signal output Package: 2 x G1/4 inch flowmeter male thread Review: All looks good - I have tried these with my watercooling kit and they seem to play along just fine with the fittings. They seem compatible (after re-wiring the plug) with computer fans (electrically at least). Output (in Hz) appears to be "Liters/minute=Hz/200" (i.e. if you measure 1,4KHz it means that you have 7Lt/min flow) as measured with my oscilloscope and cheap flow meter. Review: leaks like a sieve - Received 1 piece in package marked (pack of 2), attempted to use device but it severely leaked through the rubber gasket. Would not recommend any purchase of this device. ## Features - Connect to G1/4 inch male thread, hall effect, comes with 2 pieces - Flow range:0.3-6L/min, Water Pressure: ≤0.8Mpa - Working voltage: DC 5-24 V, F=(23*Q) ±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 | |---------------|-------| | Customer Reviews | 3.6 out of 5 stars 6 Reviews | ## Images ![GREDIA 1/4" 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/61vhBFlxZTL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ All looks good *by K***S on November 24, 2024* I have tried these with my watercooling kit and they seem to play along just fine with the fittings. They seem compatible (after re-wiring the plug) with computer fans (electrically at least). Output (in Hz) appears to be "Liters/minute=Hz/200" (i.e. if you measure 1,4KHz it means that you have 7Lt/min flow) as measured with my oscilloscope and cheap flow meter. ### ⭐ leaks like a sieve *by A***N on June 20, 2022* Received 1 piece in package marked (pack of 2), attempted to use device but it severely leaked through the rubber gasket. Would not recommend any purchase of this device. ### ⭐⭐⭐⭐ Sourcing PLC Input to Read Pulses *by S***T on December 4, 2021* I ordered this to test measuring low flows from chemical dosing pumps. The sensor must be an NPN (sinking) transistor, as it would only work when wired to a sourcing PLC input on my Micro 850 PLC. --- ## 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.us/products/160091751-gredia-1-4-water-flow-sensor-food-grade-switch-hall](https://www.desertcart.us/products/160091751-gredia-1-4-water-flow-sensor-food-grade-switch-hall) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-20*