Brand N/A Model YF-S201 Quantity 1 Color Black Material PVC Specification Current: Max. 15mA; Working voltage range: DC 5~18V; Load capacity: Features Water flow sensor consists of a plastic valve body a water rotor and a hall-effect sensor. When water flows through the rotor rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signal. Application Mainly used for water heater water machine card machine various types of filling equipment and water control device English Manual/Spec Yes Packing List 1 x Sensor (Cable length: 15cm)