Lithonia Lighting ELM2 LED SD M12 Quantum 2-Light White LED Emergency Fixture Unit Self Diagnostics LED 2-HEAD Emergency Light fixture provides 90 minutes of back up light with sealed Ni-Cad battery that automatically recharges after use- Intelligent self-diagnostic testing will ensure fixture meets code requirements 24 EXTREMELY BRIGHT LEDS provide light when most needed and only require 3 watts to power ADJUSTABLE HEAD allows you to point the fixture to the area that needs light the most when power goes out. Provides maximum flexibility when deciding where to install HIGHLY RATED FOR MULTIPLE LOCATIONS - UL and damp location listed along with meeting UL924, NFPA 101, NEC and OSHA Standards. STRONG AND DURABLE Housing is made of impact and scratch resistant thermoplastic that will not corrode or discolor over time