Pressure switch with idle protection HYWK-0402

Pressure relay with idle running protection HYWK-0402, for automatic control of the pump operation and its protection from "dry running", turns on the pump when the pressure drops to 1.5 bar and turns it off when the water flow through the device is less than 0.6 l / min If there is no water at the suction, the device switches off the pump after 10-15 seconds of its operation without water, this does not require a float switch or level switch