{"product_id":"hall-effect-water-flow-sensor-switch-dc-5-18v-flowmeter","title":"Hall Effect Water Flow Sensor Switch DC 5-18V | 1.75MPa","description":"\n\u003ch2\u003eHall Effect Water Flow Sensor Switch – Precise Liquid Flow Monitoring\u003c\/h2\u003e\n\u003cp\u003eTake control of your water or liquid flow systems with this reliable \u003cstrong\u003eHall Effect Water Flow Sensor Switch\u003c\/strong\u003e. Designed for a wide operating voltage range of \u003cstrong\u003eDC 5–18V\u003c\/strong\u003e, this compact flowmeter is ideal for DIY water management, irrigation systems, home automation, aquariums, solar water heaters, and more. With a maximum pressure rating of \u003cstrong\u003e1.75 MPa\u003c\/strong\u003e and a flow range of \u003cstrong\u003e1–30 L\/min\u003c\/strong\u003e, it delivers accurate, real-time flow data wherever you need it.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates on DC 5V to 18V — works seamlessly with Arduino, Raspberry Pi, microcontrollers, and standard 12V systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHall Effect Technology:\u003c\/strong\u003e Uses an imported Hall effect element for consistent, interference-resistant pulse output and accurate flow measurement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Waterproof Construction:\u003c\/strong\u003e The seal ring design applies top-to-bottom compression force to prevent leaks. The wiring is sealed with a waterproof rubber ring, and the inlet is further reinforced with waterproof silicone for long-lasting reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Body:\u003c\/strong\u003e Lightweight yet sturdy plastic housing resists corrosion and is easy to integrate into pipework.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in 2 Colors:\u003c\/strong\u003e Choose the option that best suits your installation setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple Wiring:\u003c\/strong\u003e Red wire connects to the positive pole (+), black wire to ground (–), and yellow wire carries the signal output — straightforward for any skill level.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e DC 5V – 18V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow Rate Range:\u003c\/strong\u003e 1 – 30 L\/min\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure:\u003c\/strong\u003e 1.75 MPa\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Hall Effect\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Pulse signal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors Available:\u003c\/strong\u003e 2 options\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere to Use It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHome and garden irrigation controllers\u003c\/li\u003e\n  \u003cli\u003eAquarium and fish tank water management\u003c\/li\u003e\n  \u003cli\u003eSolar water heater systems\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and automation projects (Arduino \/ Raspberry Pi)\u003c\/li\u003e\n  \u003cli\u003eCoffee machines and water dispensers\u003c\/li\u003e\n  \u003cli\u003eIndustrial and hobbyist liquid monitoring applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eAs water or liquid flows through the sensor body, it spins a magnetic rotor. The Hall effect element detects the rotor's magnetic field and generates a pulse signal proportional to the flow rate. Connect the output signal wire to your microcontroller or control board to calculate and monitor real-time flow volume.\u003c\/p\u003e\n\n\u003cp\u003eFor further information on safe electrical and plumbing installations, refer to the U.S. Consumer Product Safety Commission (CPSC) for guidelines on safe use of electrical components in home systems.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a Hall Effect Water Flow Sensor Switch and how does it work?\u003c\/h4\u003e\n\u003cp\u003eA: A Hall Effect Water Flow Sensor Switch measures the flow rate of liquid passing through a pipe. As fluid flows through, it rotates a small internal rotor. The Hall effect element detects the rotor's magnetic field and converts it into electrical pulse signals — one pulse per rotation — which your controller reads to calculate the flow rate and volume. This sensor operates on DC 5–18V and outputs a clean pulse signal compatible with Arduino, Raspberry Pi, and other microcontrollers.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum pressure this water flow sensor can handle?\u003c\/h4\u003e\n\u003cp\u003eA: This Hall Effect Water Flow Sensor is rated for a maximum working pressure of \u003cstrong\u003e1.75 MPa\u003c\/strong\u003e, making it suitable for most home, garden, and light industrial water systems. Its top-to-bottom compression seal ring design and waterproof silicone inlet reinforcement ensure a leak-free, durable connection even under pressure.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I wire the Hall Effect Flow Sensor to my system?\u003c\/h4\u003e\n\u003cp\u003eA: Wiring is straightforward. The \u003cstrong\u003ered wire\u003c\/strong\u003e connects to the positive power supply (+), the \u003cstrong\u003eblack wire\u003c\/strong\u003e connects to ground (–), and the \u003cstrong\u003eyellow wire\u003c\/strong\u003e carries the pulse signal output to your microcontroller or control board. The sensor is compatible with DC 5V to 18V systems, including standard 12V setups and common development boards.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this flow sensor waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The sensor features a multi-layer waterproof design: the seal ring uses top-to-bottom compression to prevent leaks, the wire lead-out is sealed with a waterproof rubber ring, and the water inlet is reinforced with waterproof silicone. This ensures reliable, long-term performance in wet environments.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a Hall Effect Water Flow Sensor Switch and how does it work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A Hall Effect Water Flow Sensor Switch measures the flow rate of liquid passing through a pipe. As fluid flows through, it rotates a small internal rotor. The Hall effect element detects the rotor's magnetic field and converts it into electrical pulse signals — one pulse per rotation — which your controller reads to calculate the flow rate and volume. 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