【High Sensitivity】: Our Water Flow Sensor Switch is designed with high sensitivity to detect even the slightest changes in water flow. It serves as an essential part for hot water heaters and wall-hung boilers, providing constant temperature regulation for gas inlet valves. 【Durable Construction】: Made from high-quality materials, this Water Flow Sensor is built to endure the challenges of regular use. Hot Water Heater Flow Sensor, Hall Switch Wall-Hung Boiler, Constant Temperature Gas Inlet Regulator Valve. 【Easy Installation】: This water sensor switch is designed for hassle free installation. It can be installed in a variety of systems without requiring any tools or professional help. 【Energy Efficient】: With its intelligent design, our Water Flow Sensor Switch operates with minimal power consumption. This not only makes it eco friendly choice but also helps in reducing your energy bills. 【Versatile Application】: Whether you need it for home use, industrial applications, or irrigation systems, this Water Flow Sensor Switch is versatile enough to meet a wide range of needs. Size Chart: 6.7cm/2.64inch Package Includes: 1pcs Water Flow Sensor Note: Please allow slightly errors due to manual measurement and different monitors.