ITEM NAME:1 Pc White 3-3.0L/min Plastic Water Liquid Level Flow Sensor Meter Male G1/4 100% brand new and high quality. Description : Water Flow sensor includes a plastic body housing, a water rotor, and a hall-effect sensor, PCB electronics board Working performance : When the water flows through the rotor, then rotor is rolled Its speed changes with different rate of flow. Then the magnetic rotor make reaction to Hall sensor, the hall-effect sensor outputs the corresponding pulse signal The flow sensor is suitable to detect the flow in water dispenser or coffee machine ..... Specification: Material : Plastic Color: White Function: Sensor, flow rate control Flow Rate: 0.3~3 L/min Flow Pulse: F(Hz)=(109xQ) L/min +/- 5 % Max. Working Current : 15mA (DC5 V) Min. Working Voltage: DC 4.5V Working Voltage: DC 5V~24V Load Capacity: =10 mA (DC 5 V) Pressure: 0.8mPa Operating Working Temperature : -25~+60℃ 1 Litter water =7055Pulse +/-10% Accuracy :+- 5% Working environmental: Water, liquid, light oil, beer, drinking water Connect Pipe Diameter: 6mm or 1/4" Inner Diameter: 58.4mm/0.23" Outer Diameter: 12.2mm/0.48" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you.Water Flow sensor includes a plastic body housing, a water rotor, and a hall-effect sensor, PCB electronics board. the hall-effect sensor outputs the corresponding pulse signal. Flow Pulse: F(Hz)=(109xQ) L/min +/- 5 %.