With Sequence On Simultaneous Off 3-input functionality, 8-pin ARC/ARD Series detects float switch inputs, from which it determines necessary outputs to turn on with line voltage. As lag and lead switches open, load remains energized. When all switches are open, both loads de-energize simultaneously and lead load alternates. Units feature 120 Vac control voltage, as well as SPDT 2-line voltage outputs with contact rating of 10 A 1/3 hp at 120 Vac (combined output).