Features Stable Performance Induction chamber, magnetic control chamber and electronic components are designed separately to avoid switch failure caused by iron material in the pipeline that is magnetically adsorbed. Low water pressure start; return spring made of high-quality stainless steel; it can start the pump when the water pressure is > 0.03 kg. The sensitivity of this flow switch is adjustable. This product is widely used for the low pressure range family, especially important for starting the low pressure ignition of the water heater and the automatic water circulation of the solar water heater. High temperature resistant materials allow the product to be used for both hot (up to 70°C) and cold water. The electronic components as a control unit do not cause sparks during work, which is quite safe. Turn the water on equipment and water flows in the pipeline. Water pulse induction door rotates towards the water and magnetic control unit rotates together, which triggers the sensor elements when this is the case reaches a certain position to turn on the boost of the household line pump. When the water flow is turned off, the induction door magnetic control unit moves to a certain position under the action of the reset spring to turn off the pump. Specification: Model: HT-200. Rated voltage: 220 V. Overload current: 1.5 A. Connection thread: G1/2-G1/2Suitable liquid: water or other liquids with similar physical and chemical properties Liquid pressure: <0.6 MPa Liquid temperature: <70°C. Weight: 160g/5.6oz (approx.) Package list: 1 x flow switch (with seal) Package List