This led light is a relatively novel product:It is the same as Trunking Grille Light and can be used as cable raceway. There is no need to worry about the danger of the wires of the lamps being exposed to the outside, and it also ensures the beauty and neat of the ceiling.Easy to install: It is self-contained pre-wired trunking and have click system. It's easy to install. The trunking will be put into the wires according to the customer's requirements, and no additional wiring is required during installation. Just connect the terminals inside the trunking.Different numbers of wires in the cable raceway represent different functions:5 wires: Basic Lighting6 wires: Basic Lighting OR Built-in Battery Emergency7 wires: Basic Lighting + Dimming8 wires: Basic Lighting + Dimming + Built-in Battery Emergency11 wires: Basic Lighting + Dimming + 2xUPS Emergency