The H2Q pump control is a universal flow switch of the latest generation with an adjustable start pressure (adjustable via the screw on the back of the controller) that fully automatically turns the pump on or off when the tap or valve is opened or closed. The start pressure is adjustable from 1.2 to 2.2 bar. The pump control protects the pump from running dry. Suitable for centrifugal pumps and pressure submersible pumps up to 1.5 HP (10 Amp.) Connection 1" Minimum capacity 15 L/h. Maximum capacity 7500 L/hr at max pressure 10 bar and 230V. Protection class IP 65.