Features Safe and Reliable -- Design products adopting magnet repulsion instead of springs, ensuring safe and reliable operation. Impurity-Free Water -- Permanent magnet filter removes impurities from the water, providing cleaner and healthier water flow. Scale Prevention -- Water is not easily scaling, promoting better water quality and contributing to overall health. Durable and Reliable -- Can be used multiple times with a long service life, ensuring durability and reliability. Energy Efficient -- Used in instantaneous electric water heaters, this flow control switch helps save electricity power. Description:Water flow switch is a very important part in the instant water heater. When there is a certain water flow through inlet, electric circuits is connected and water heater begin to heat. When the water flow stops, the water heater stops working. Magnetic type water flow switch controls switching on and off through the magnet, which is safe and reliable. Features: Design products adopting magnet repulsion instead of springs, safe and reliable.Permanent magnet filter removes impurities.Water is not easily scaling, which is conducive to health.Can be used a lot of times, long service life and good reliability.Used in the instantaneous electric water heater, can save electricity power. Specifications:Model: EFS-04P Color: Black Current: 3AVoltage: 220VPower: 10WPipe Thread Size: G1/2" (BSP)Diameter: 2cmAmbient Temperature: ≥1°COperating Temperature: ≤100°CRated Pressure: ≤0.65Mpa  Max. Pressure: ≤1.5Mpa Size: 2 x 5.2cm / 0.78 x 2.04"Weight: 26g(approx.) Package Includes: 1 x Switch Package List