Water Source PS2040 Pressure Switch, 115/230 V, 20, 40 psi Working

The 20/40 psi pressure switch signals the pump to start when the water system drops to a preset (e.g. 20 psi) and stop at high-pressure mark (e.g. 40 psi). This switch is to be used with submersible well pumps or as a replacement switch. It can be wired 115/230 V.