The oil smart water pump switch sensor differentiates between oil and water. This switch is available as 120VAC, 230VAC European or 12/24VDC. Oil smart water pumps do not require an electrial panel. Differential between ON and OFF comes in 2.5' or 6' models. Available with or without a piggy-back plug. Helps satisfy ASME 17.1 and The Spill Control and Countermeasure Plan issued by the EPA. This switch can be an integral part of the pump assembly or a stand-alone component wired to the pump or control valve.