High quality illuminated round rocker switch from leading manufacturer sci to fit the standard 20mm panel cut out. on off, single pole single throw (spst) function. this round rocker switch has a black body and black rocker with a red illuminated point of light lens. this is a low voltage rocker switch and operates at 12 volts only. carries enec (european) and ul (american) approvals at mains voltages and complies with rohs.