All that is visible with a ProjEXIT exit sign is a small plate in the ceiling and the exit indication it provides on the wall. All necessary equipment is contained above the ceiling plane in a 10-inch-high box IC-rated for insulated ceilings. An optional NiCard battery system is available, providing 90 minutes of emergency operation in the event of power failure. The concealed fixture is lamped with either an LED or a halogen source.