Waste King Garbage Disposal Air Switch Base and Control Unit - ARC-4200 Air switch controller allows you to turn your disposal on and off with the touch of a button (ARC-4200 includes base unit only, switch button sold seperatly) Easily mounts into existing sink hole or a 1-3/8 inch in the countertop Perfect for island sinks or anywhere a wall switch is unavailable Air switches sold separately in multiple finishes and coordinate with all kitchen faucet styles and finishes Plug control module into a dedicated, grounded 120V AC outlet that is continuously energized: no wall switch or electrical hardwiring required Compatible with Moen, Waste King and all other garbage disposals