The Grundfos Pressure Manager is an intelligent pump controller that makes an excellent addition to your domestic pressure pump, providing control automation and ongoing protection. The PM2 will automatically start and stop the pump when outlets are turned on or off. It includes the same pump protections as the PM1 but also has the option to prevent the pump from running continuously for more than 30 minutes. The PM2 also offers a greater level of control, allowing the user to adjust the cut-in pressure (1.5 - 5 bar).