Emergency lighting and accessories provide light and mark exits to help prevent injuries in emergency situations such as a power failure. Emergency lights turn on when the power goes out to supply a limited amount of light for those within the building. They're typically used along with exit signs to aid building evacuations. Lightsticks are a temporary light source that people can carry to find exits, conduct searches, signal for help, and direct traffic. Emergency lighting accessories include battery backup and standby power systems to keep lights on during a power outage.