Water Flow Switch adopts a Magnetic Reed Switch, G1/4 female threaded ports each end.The state of liquid in the pipeline, flowing or stationary, is output in the form of electric switch signal.Suitable for replacing water purifier' filter element where without tap water. Specifications:Product Name: Water Flow SwitchMaterial: Plastic(Shell)Size: 49mm x 20mm x 26mm / 1.93" x 0.79" x 1.02"(L*W*H)Cable Length: 480mm / 18.9"Working Voltage: DC 0-100VMaximum switch current: 100mARated Voltage: DC 5VMax Current: 10mA(DC 5V)Maximum water pressure: 1.5MPaFlow range: 1-25L/minFemale Thread Diameter: G1/4Ingress Protection Rating: IP65Color: WhiteNet Weight: 19g Package Included:1 x Water Flow Switch Note: 1. Installed in accordance with flow direction in the product, otherwise there is no signal output.2. A filter screen must be installed at the inlet of the switch, in order to avoid particles and debris entering the switch.