Preset on pressure: 40 psi/ the contacts close at this pressure to send power to the motor/ pump.Preset off pressure: 60 psi/ the contacts open at this pressure to shut power off to the motor/ pump.Adjustable pressure: Instructions are under the lid of the pressure switch on how to adjust pressure.Max pressure: 80 psiMin pressure: 20 psiCan be wired 1 phase or 3 phase15 or 230 volt / at 115 volt 1 phase it will handle 1.5 , at 230 volt 1 phase it will handle 2 , And at 230 volt 3 phase it will handle 3 .Color: GrayMaterial: MetalQuantity: 1 PCPackage Included: 1 x Water Pump Pressure Control SwitchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.