switch plate

noun

a plate, usually of metal, ceramic, or plastic, covering a switch so that the knob or toggle protrudes.

Also, switchplate.

Also called wall plate.

Examples from the web for switch plate

Replace cracked or missing light switch plate covers and outlet faceplates.
Picture page overlays slide behind the switch plate face.
By pressing down on the appropriate switch plate opposite that item, a sound is produced, communicating an idea.
Check position of the switch plate on the range selector.
In addition, all switch plate and electrical outlet covers had been removed, exposing wires.