{"product_id":"hall-effect-water-flow-sensor-dc-5-18v-1-30l-min-1-75mpa","title":"Hall Effect Water Flow Sensor DC 5-18V | 1-30L\/min","description":"\n\u003ch2\u003eHall Effect Water Flow Sensor — Accurate, Durable \u0026amp; Easy to Install\u003c\/h2\u003e\n\u003cp\u003eMonitor and control liquid flow with precision using this compact \u003cstrong\u003eHall Effect Water Flow Sensor\u003c\/strong\u003e. Designed for a wide range of DIY plumbing, electronics, and water management projects, this sensor delivers reliable pulse output across a broad operating voltage range (DC 5V–18V) and handles flow rates from 1 to 30 L\/min at pressures up to 1.75 MPa. Made in Mainland China.\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–18V, making it compatible with Arduino, Raspberry Pi, and most microcontroller platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWear-Resistant Impeller:\u003c\/strong\u003e The impeller is inlaid with stainless steel beads for long-lasting, low-friction performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeak-Proof Seal Design:\u003c\/strong\u003e The seal ring structure applies top-to-bottom force to prevent water leakage, ensuring a reliable, drip-free connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproof Hall Element:\u003c\/strong\u003e Imported Hall element with a waterproof seal rubber ring and inlet waterproof silicone for enhanced moisture protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple 3-Wire Connection:\u003c\/strong\u003e Red (VCC\/+), Yellow (Signal OUT), Black (GND\/−) — no soldering expertise required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Ideal for water heaters, water vending machines, water cooling systems, flow measurement devices, credit card dispensing machines, and DIY projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2\" External Thread:\u003c\/strong\u003e Standard fitting for easy integration into existing plumbing setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eDC 5V – 18V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eRated Voltage (Min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eDC 4.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eMax Operating Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e15 mA (at DC 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eLoad Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e≤ 10 mA (at DC 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eFlow Rate Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e1 – 30 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eMax Water Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e1.75 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e-25°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eHumidity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e35% – 90% RH (no frost)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eExternal Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eIntake Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOutlet Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e1 × Hall Effect Water Flow Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWiring Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRed wire (VCC):\u003c\/strong\u003e Connect to the positive power supply terminal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYellow wire (Signal OUT):\u003c\/strong\u003e Connect to your microcontroller's digital input pin.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack wire (GND):\u003c\/strong\u003e Connect to the negative\/ground terminal.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eUsage Precautions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not expose to severe impact, dropping, or chemical erosion.\u003c\/li\u003e\n  \u003cli\u003eDo not allow the medium temperature to exceed 80°C during continuous operation.\u003c\/li\u003e\n  \u003cli\u003eKeep water pressure within the rated 1.75 MPa limit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/everything-is-figureoutable-sage-green-quote-canvas-wall-art\"\u003eWall Art for Your Workshop or Maker Space\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe plumbing practices and DIY water system standards, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety information.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What voltage does this Hall effect water flow sensor support?\u003c\/h4\u003e\n\u003cp\u003eA: This water flow sensor operates on a DC voltage range of 5V to 18V, with a minimum rated working voltage of DC 4.5V. It is compatible with Arduino (5V), Raspberry Pi, and most standard microcontroller boards operating in this range.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum flow rate and pressure this sensor can handle?\u003c\/h4\u003e\n\u003cp\u003eA: The sensor supports a flow rate range of 1 to 30 L\/min and can withstand water pressure up to 1.75 MPa. It is suitable for household water lines and most small-to-medium plumbing or cooling system applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this water flow sensor compatible with standard plumbing fittings?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The sensor features a standard 1\/2\" external thread, making it easy to integrate into most existing plumbing setups, water heater lines, cooling systems, and liquid flow measurement devices without special adapters.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I wire this sensor to my microcontroller?\u003c\/h4\u003e\n\u003cp\u003eA: Wiring is straightforward with three color-coded wires: connect the \u003cstrong\u003eRed\u003c\/strong\u003e wire to your positive power supply (VCC), the \u003cstrong\u003eBlack\u003c\/strong\u003e wire to ground (GND), and the \u003cstrong\u003eYellow\u003c\/strong\u003e wire to a digital input pin on your microcontroller to read the pulse signal output corresponding to flow rate.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What voltage does this Hall effect water flow sensor support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This water flow sensor operates on a DC voltage range of 5V to 18V, with a minimum rated working voltage of DC 4.5V. It is compatible with Arduino (5V), Raspberry Pi, and most standard microcontroller boards operating in this range.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum flow rate and pressure this sensor can handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The sensor supports a flow rate range of 1 to 30 L\/min and can withstand water pressure up to 1.75 MPa. It is suitable for household water lines and most small-to-medium plumbing or cooling system applications.\"}}, {\"@type\": \"Question\", \"name\": \"Is this water flow sensor compatible with standard plumbing fittings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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