Completely pre-wired for easy installation Eliminates the dangers associated with back-feeding Cover included to protect toggle switches and circuit breakers Metal cabinet, designed for indoor use Includes color-coded wattmeters and an L5-30 power inlet Transfer Switch Compatibility 120V 30A Manual Transfer Switch - Compatible with 2000 Plus and 3600 Plus 240V 50A Manual Transfer Switch - Compatible with 2000 Plus, 3600 Plus x;2, and 5000 Plus STS (Smart Transfer Switch) - Compatible with 5000 Plus series