This water flow switch uses a water flow electromagnetic control device and on-off control sensing elements to achieve automatic pump control. The induction chamber, magnetic control chamber, and electronic components are separately designed to prevent switch failure caused by magnetic adsorption of iron particles in the pipeline. Constructed with high-temperature resistant materials, this product is suitable for both hot water (up to 70°C) and cold water applications. It activates the pump at a water pressure as low as 0.03 kg/cm². The electronic control components do not produce sparks during operation, ensuring safe performance. Made from high-quality copper material, the switch offers durability and high strength. Dimensions: 7 cm x 7 cm (approximately 2.76" x 2.76"). This water flow switch is commonly used in residential low-pressure water systems, particularly for enabling ignition in water heaters with low water pressure and supporting automatic water circulation in solar water heating systems. Item Name: Water Flow Switch Material: Copper Operating Voltage: 220V Working Current: 1.6A Maximum Power: 200W Maximum Current: 4A Lifespan: 100,000 cycles Model: HT-800 Screw Thread: G1 Applicable Liquid: Water or liquids with similar physical and chemical properties Fluid Pressure: 0.6 MPa Liquid Temperature: 70°C Size Details: Size: 7 cm x 7 cm / 2.76" x 2.76" (Approx.) Notes: Due to lighting and screen setting differences, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Water Flow Switch