Feature: 1. High accuracy design, the liquid flow rate is greater than 1.2L/Min 2. Can be used in water or oil without filters 3. Minimal obstruction to liquid flow in the water pipe which can improve efficiency 4. Great processing, non-fragile and long service life 5. All stainless steel structure, good sealing performance, easy to install Specification: Item Type: Water Flow SwitchModel: FS-01 4-Point (G1/2) double female thread Working Voltage: 0-48 (VDC) Rated Current: 0.5 (A) Rated Power: 70W Working Temperature: -40 ~ 120(℃) Applicable Medium: Water / oil Installation: Horizontal / vertical Material: 304 stainless steel Flow Size: > 1.2L / Min Thread Size: Double female thread G1/2in Water Inlet and Outlet Diameter: φ12mm Size: Approx. 59 x 24 x 24mm / 2.3 x 0.9 x 0.9inThe 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.. Package List: 1 x Water Flow Switch