🔹 A heating or warming tray with electrical control
What does exist are products like warming trays — electric devices that keep food plates warm:
They have power switches or temperature controls on them.
Some have indicator lights to show when they’re on.
They do not usually have built-in electrical outlets.
These products are popular for buffets, parties, or dinner service. They help maintain food temperature using electricity and controls but are standalone warming units rather than covers per se.
🔹 Electrical switch and outlet covers
There are products that combine a switch and outlet in one cover plate — but these are strictly wall components, not kitchen appliances.
Examples include:
Combination wall plate covers that have a single switch and an outlet built into one unit.
Decorative switch/outlet covers sold on Etsy and similar sites that include both cutouts for a switch and an outlet.
These are meant for electrical boxes in your wall — not for dish covers.
