3W emergency lighting is an incredibly important feature to any commercial or retail building. Typically installed in ceilings of corridors meeting rooms and other high traffic spaces these lights are a must have to provide lighting under fault conditions. It comes with a pre wired 3 hour battery which will power the 120 lumen 3W LED diode consistently. It will produce a bright 6500k daylight glow. Not only is it an effective reliable light but it also has a 50000 hour average lifespan making sure it wont need to be replaced for the full length of its required installation span.