14 VDC.
Typical Applications: Lighting, Water Heater, Water Pump and Other Appliance Type Control.

S481 — Black W/Red Rocker Switch, 20 A   Illuminated Rocker On/Off SPST*

Legend:
SPST = single pole, single throw
SPDT = single pole, double throw
DPST = double pole, single throw
DPDT = double pole, double throw