Item Type: Water Flow Switch_x000D_ Model: FS-02 (G1 / 2) female/male thread_x000D_ Working Voltage: 0-48(VDC)_x000D_ Rated Current: 0.5(A)_x000D_ Rated Power: 70W_x000D_ Working Temperature: -40 ~ 120()_x000D_ Applicable Medium: Water / oil_x000D_ Installation: Horizontal / vertical_x000D_ Material: 304 stainless steel_x000D_ Flow Size: >1.2L/Min_x000D_ Thread Size: Female/Male threads G1/2in_x000D_ Water Inlet and Outlet Diameter: 11mm_x000D_ Size: Approx. 60 x 32 x 24mm / 2.4 x 1.3 x 0.9in_x000D_ The working principle of the water flow switch is that an upward lifting force lifts a magnetic valve core close to and drives a reed switch to generate a signal when the water flows. The advantage of the water flow switch is that the water pressure is low. When the magnetic ring inside the piston is pushed to the position of the reed switch, the reed switch generates a signal. Reed switch water flow switch has stable working performance and is widely used in various equipment. And some piston water flow switches can adjust the reed switch operating point to change the flow signal, so it is the first choice for various types of equipment.