Lithonia Lighting ELM2 LED HO M12 Quantum 2-Light White LED Emergency Fixture Unit High-output ni-cad battery LED 2-HEAD Emergency Light fixture provides 90 minutes of back up light with sealed Ni-Cad battery and can also power remote LED light fixtures. Battery automatically recharges after discharge 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