The Teknopress Nero is a universal flow switch. The Teknopress 2.2 Nero has a starting pressure of 2.2 bar, the Teknopress set Nero has an adjustable start pressure that fully automatically turns the pump on or off when the tap or valve is opened or closed. The start pressure is adjustable from 1.0 to 2.8 bar. The pump control protects the pump from running dry. Suitable for centrifugal pumps and pressure submersible pumps up to 2 HP (16 Amp.) Connection 1" Minimum capacity 1 L/min. Maximum capacity 7500 L/hr at max pressure 12 bar and 230V. Comes without cables and pressure gauge