Pre-wired for Easy Installation: Fully pre-wired design simplifies the installation process, saving time and effort. Enhanced Safety: Eliminates the risks of back-feeding, ensuring a safe and reliable power transfer. Protective Cover Included: Comes with a durable cover to safeguard toggle switches and circuit breakers from damage. Indoor-Ready Metal Cabinet: Rugged metal housing, specially designed for safe indoor use. Color-Coded Wattmeters & L14-30 Power Inlet: Features two easy-to-read wattmeters and a convenient L14-30 inlet for smooth operation. cULus 1008 Listed: Meets stringent safety standards with cULus 1008 certification for top-tier performance. You can also refer to the Reliance official website: link>>