Hot Water Magnet Sensor

Description

Universal Water Heater Magnetic Flow Sensor Switch (10mm / 14mm / 19mm / 28mm) ### Product Overview This Water Heater Magnetic Flow Sensor Switch is a vital safety and operational component designed for instant electric hot water shower systems. Utilizing a highly responsive internal magnetic reed mechanism, it acts as the primary “turn-on” trigger for your water heater. When you open your shower tap, the incoming water pressure pushes an internal magnetic float upward past this sensor. The magnetic field instantly closes the switch, signaling the control board to safely engage the heating elements. When the water stops flowing, the switch opens immediately, cutting power to the elements to prevent dry-burning, overheating, and dangerous tank ruptures. ### Key Features Magnetic Reed Technology: Built with high-sensitivity magnetic contacts that respond instantly to water pressure changes without direct electrical exposure to the water. Prevents Dry Burning: Serves as the ultimate firewall against runaway heating by ensuring elements only activate when active water flow is present. Standard Wire Connectors: Typically comes pre-wired with a standard 2-pin female socket plug for an effortless plug-and-play installation onto the main PCB. Compact, Sealed Design: Housed in a waterproof, food-grade molded plastic casing to withstand constant humidity and heat inside the shower unit casing. ### Product Compatibility & Sizing This sensor is highly universal across many Southeast Asian and global instant water heater brands. To ensure a perfect fit, installers typically check the total physical length of the plastic casing (common standard sizes include 10mm, 14mm, 19mm, and 28mm). Common Compatible Water Heater Brands: Because it functions as a standardized electronic switch, this component acts as a direct replacement part across a massive array of popular home shower brands, including: Joven (Widely used across standard and booster pump series) Singer Alpha Deka Sharp Panasonic Midea Electrolux Cornell / Elba ⚠️ Installation Note: If your instant hot water shower turns on but fails to heat up, or if the heating light doesn’t activate when the water is running, this magnetic sensor or the internal floating magnet plunger is likely worn out or stuck. Always turn off the main circuit breaker (MCB) and isolate the water supply before replacing this part.