--- product_id: 723152885 title: "1/2\" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2）" brand: "gredia" price: "1206 kr" currency: NOK in_stock: true category: "Gredia" url: https://www.desertcart.no/products/723152885-1-2-water-flow-sensor-food-grade-switch-hall-effect store_origin: NO region: Norway --- # DC 5-24V wide voltage 1-30L/min flow range G1/4 inch male thread fit 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） **Brand:** gredia **Price:** 1206 kr **Availability:** ✅ In Stock ## Summary > 💧 Flow with confidence, measure with precision! ## Quick Answers - **What is this?** 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） by gredia - **How much does it cost?** 1206 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/723152885-1-2-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 - • **Dual Pack Value:** Two flowmeters included to double your efficiency and backup readiness - • **Food-Grade Safety:** Crafted from ROHS-certified, food-safe plastic for pure, contaminant-free flow - • **Precision Flow Control:** Accurate ±2% measurement for flawless fluid management - • **Versatile Compatibility:** Ideal for coffee machines, water purifiers, beverage dispensers, and smart campus devices - • **Plug & Play Installation:** Lightweight design with secure sealing ring prevents leaks and speeds setup ## Overview This 1/2" Water Flow Sensor features a hall effect switch with a 1-30L/min flow range, operating at DC 5-24V and up to 1.75Mpa pressure. Made from food-grade, ROHS-compliant plastic, it ensures safe, leak-proof fluid measurement. Perfect for professional-grade water heaters, coffee machines, and smart beverage systems, it comes as a convenient pack of two for enhanced value and reliability. ## Description GREDIA 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） : desertcart.ae: Industrial & Scientific ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RG4KXWJ | | ASIN | B07RG4KXWJ | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.0 4.0 out of 5 stars (19) | | Customer reviews | 4.0 4.0 out of 5 stars (19) | | Date First Available | 26 December 2024 | | Date First Available | 26 December 2024 | | Item Weight | 100 g | | Item model number | GR-201P2 | | Item model number | GR-201P2 | | Manufacturer | GREDIA | | Manufacturer | GREDIA | | Material | Plastic | | Package Dimensions | 18.11 x 11.71 x 3.51 cm; 100 g | | Package Dimensions | 18.11 x 11.71 x 3.51 cm; 100 g | | Part number | GR-201P2 | | Size | G1/2" male thread 2 | | Style | G1/2" male thread | ## Images ![1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - Image 1](https://m.media-amazon.com/images/I/61nLiOnDsJL.jpg) ![1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - Image 2](https://m.media-amazon.com/images/I/61pUNNCWDAL.jpg) ![1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - Image 3](https://m.media-amazon.com/images/I/61D8ujyEenL.jpg) ![1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - Image 4](https://m.media-amazon.com/images/I/61fM7z5z0YL.jpg) ![1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - Image 5](https://m.media-amazon.com/images/I/5142HDOWNBL.jpg) ## Questions & Answers **Q: If the output signal is a pulse, what is the pulse rate per liter and duration per pulse?** A: The current image shows an "F" number of 7, which means 7Hz per liter/min, so 7 pulses per second indicates a flow rate of 1 liter/minute, hence 7 * 60 seconds/minute = 420 pulses per liter (per minute). I have no idea what the duration would be. **Q: Does it prevent back flow or what happens if water does try to go in wrong direction?** A: It does not have any backflow prevention. It is a little water wheel inside a pipe which has magnets in the vanes of the water wheel. The unit simply counts magnetic pulses as the wheel is moved by the water flow. It would probably register water flow either way but would only be accurate in the forward flow direction. Any domestic water system should have backflow preventers in place to keep drinking water contamination from occuring. **Q: Are the threads npt, bspt or bspp? please understand this is basic info should always be provided without having to specifically ask. thanks.** A: Hello, thank you for your inquiry. It's BSPT. **Q: If the flow rate is less than 1L/minute, will it not not show any pulses? I'm interested in using this to detect leaks and 1L/min is a lot of water.** A: I don't know about 1L/min, but I have tried pumping liquid through one using a dosing pump and nothing registered. The water wheel will have some resistance, so a very slow flow might not register. ## Frequently Bought Together - GREDIA 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min (Pack of 2） - 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.no/products/723152885-1-2-water-flow-sensor-food-grade-switch-hall-effect](https://www.desertcart.no/products/723152885-1-2-water-flow-sensor-food-grade-switch-hall-effect) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-16*