Water witch electronic float switch 101. Mercury Free!. Oils and Fuels ù Will not activate switch. Simple Installation ù Mounts at any angle. Delay On ù To avoid false pump cycles. Delay Off ù Controls standing water level. Electronic ù No wear, sticking, or electrolysis. Stainless Steel Metal Parts. 12Vdc, Pump Size: 15 Amps Power at Rest: 0.006 Amps Dimensions: 2inch W x 1.335inch H x 1inch D