[Perfect Replacement]: This is a water pump pressure control switch replacement perfect for pressure control and garden water pump. [Double Pole & Adjustable]: The water pump pressure with double pole, is adjustable through this switch and you can set the adaptable pressure as you the work needs. [Durable & Easy Use]: It is made of high quality material for strong strength and long durability. Easy to install, can be used for a long time. [Press On & Off Pressure]: 20-40 PSI the contacts close at this pressure to send power to the motor/ pump. 60 psi the contacts open at this pressure to shut power off to the motor/ pump. [Common Use]: Suitable for most of water pumps, such as self-priming water pump, injection water pump, garden water pump, etc. [.