Water Flow Switches,Brass- 4 DN20mm Thread Effect Liquid Water Flow Sensor Switches 1-30L/min water flow sensor 3/4 nptFeatures:Working voltage range: DC5-15V, thread: 3/4. Flow range: 1-30L/Min, Water Pressure: less than1.75Mpa. Wide range of applications, mainly used for water heaters, water dispensers. material, & long-time service. Appearance clear product identification, accurate compliance. Specifications:Material:BrassVoltage range: DC5-15VThread: 4 Package Includes:1x Effect Flow SensorNote:Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.