An emergency light is a lighting device with a battery backup that switches on automatically when a building experiences a power outage. Emergency lights are standard in commercial and high occupancy residential buildings, such as college dormitories. Most building codes require emergency lighting be installed in older buildings as well.
The main housing of these exit signs and emergency lights is painted white or made from a white thermoplastic.
Recessed mounted exit signs or emergency lights offer a low-profile installation by hiding the housing, which includes the electrical components of the exit sign in the ceiling.
Miscellaneous Emergency lighting and Exit sign parts.