Beckett's easy to use float activated safety switches provides a reliable means to safely monitor high water levels. The switches may be wired directly to the system to turn off the air conditioner or furnace equipment, or it can be wired to sound an alarm if the water level becomes too high. Single pole, double throw, single break snap action switches with silver contacts. Safe for either AC or DC low voltage applications. Terminals on switches suitable for .020" x .187" female spade connections to your wiring harness if desired. Switch is UR Rated. Comes with 18" wire leads.