Using LED Lighting Simplified connection technology, the iluma Rail Lighting system from i-lighting can be combined with the company’s iluma Stair Lighting Kits to light entire decks and porches. The system’s 0.2- inch design is available in 4-, 6- and 8-foot sections and uses photocell technology to detect ambient light and automatically turn lights on and off. In addition, the lighting can be used independently with an outdoor power supply or with the iluma Stair Lighting Kit through the use of i-lighting’s custom low-voltage DC system and Easy Plug connections.