Solid brass and ABS construction Air switch gives you a safe way to operate your garbage disposal Dual outlet gives you an extra outlet, not controlled by the air switch, perfect for additional appliances such as hot water dispenser Installs on a standard 1-3/8" to 1-1/2" hole Air switch kit includes power module, air switch button, and air tube Air switch can be installed in any convenient location such as cabinet front or on countertop within easy reach to persons with disabilities All mounting hardware included UL listed power module Power Module Electrical Rating: 3A, 125VAC For indoor use only