It has instituted many other lighting modifications throughout its stores that include reducing the number of lamps used in stockrooms, displays and corridors; dimming lighting fixtures; converting exterior lights from high energy to low energy usage by using new long life technology; implementing advanced control programming from the Novar energy management system (discussed in more detail below); testing light sensors that monitor the level of natural light available and dim the lights when sufficient daylight is available; significant reductions of lighting exterior building signs throughout the night; delaying the time customer lights are turned on throughout our stores; and requiring LED lighting that has a longer life span, produces less heat and uses significantly less energy than typical neon signs.