The Liberty OTC-230-3-VS is a standalone OilTector control with a touch-screen interface and solenoid valve. It differentiates oil from water in elevator sump pits, transformer vaults, and similar applications: it activates the pump to remove only water, ignores an oil layer instead of discharging it, and alarms on a high-water or high-oil condition (ASME A17.1 compliant). Rated for three-phase power at 230V.