Description: The water flow sensor includes plastic housing body, water impeller and hall sensor, PCB electronics boardWorking performance: when water flows through the rotor, the impeller is coiled, its speed varies with different flow speed. Then the magnetic rotor reacts to the hall sensor, the hall sensor outputs the corresponding pulse signalThe flow sensor is suitable for detecting the flow in the water dispenser or coffee maker. Specification:Material: PlasticColor: WhiteFunction: Sensor, Flow Rate ControlFlow Rate: 0.3 - 3 L/minFlow Pulse: F(Hz)=(109xQ) L/min +/- 5%Max. Operating Current: 15mA (DC5V)Min. Working Voltage: DC 4.5V Working Voltage: DC 5V - 24V Capacity: = 10mA (DC 5V)Pressure: 0.8mPaWorking Operating Temperature: -25 - +60°C1 Water Litter = 7055 Pulses +/- 10%Accuracy: +- 5%Working Environment: Water, Liquid, Light Oil, Beer, Drinking Water Connecting Pipe Diameter: 6mm or 1/4" Inner Diameter: 58.4mm/0.23 inch Outer Diameter: 12.2mm/0.48 inch Quantity: 1 PcNote: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you make a bid, due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Content:1 Pc x Water Flow Sensor