1.Water Flow Switch adopts a Magnetic Reed Switch, G1/2 male threaded ports each end. Equipped with filter water entry.2.Mainly used for water heater, boiler, water dispensers, coffee machines, hot card machines, steam equipment, water system, the card sales, selling self-help water systems, water treatment equipment, cooling systems, mechanical equipment, instrumentation. Specifications:Product Name: Water Flow SensorMaterial: Brass(Shell)Liquid Temperature: Not More Than 60CExternal Thread Diameter: G1/2Tube Length: 62mmFlow Range: 1-30L/minMax Switch Voltage: DC250VMax Contact Rating: 70WMax Current: 0.3AMaximum Water Pressure: 1.75MPaCable Length: 33cmSize: 62mm x 24mm x 26mm(L*W*H)Ingress Protection Rating: IP65Color: Brass ToneNet Weight: 114g Package Included:1 x Water Flow Sensor Note: 1.