The De-Hummer Fan Control 3 Speed Switch, Model Number 941-411, is a wall plug-in device designed to eliminate hums in a room. This ivory-colored ceiling fan control features a 3-speed setting and can be controlled with a wall switch. It is energy saving and has a manufacturer warranty of 1 month. The De-Hummer Fan Control is ideal for use in the kitchen, living room, or dining room, and requires no assembly. Made of steel and plastic, this wall-mounted ceiling fan control was manufactured by Power Controls Corp in the United States during the late 20th century.

These switches are from 1987 so the packages are worn quite a bit.