Perfect Design - These switches are designed to connect and disconnect DC12V 20A electrical circuits, featuring SPST ON-OFF control with a 2-pole (on/off) design. The third pole includes an LED for grounding. Fluorescent lights will illuminate when the switch is turned on.Safety Protection - These car switches feature copper-plated silver contacts for excellent electrical conductivity. Constructed with high-quality materials and a flame-retardant housing for enhanced safety.Easy Installation - The yellow pin is for lighting, the middle pin for the negative (DC) or zero (AC) line, and the remaining pin connects to your equipment. Requires only a 20mm mounting hole. Each small on/off switch includes a keyhole slot to prevent unwanted rotation.Widely Used - These LED rocker switches are suitable for various electrical applications, including cars, boats, household appliances, communication devices, measuring instruments, gas water heaters, and light decorations.5 Random Colors - This 12V round switch set includes 10 pieces in 5 random colors.