Sunlite Surface Mount Exit Light, White Plastic Housing, Single Faced White Plate, Red Letters, Emergency Backup BatteryThis heavy duty steel constucted Universal Surface Mount Exit Light is great for any commercial and or business setting. Includes an emergency backup ballast, a universal bracket and energy efficiant LED technology. The internal solid state transfer switch automatically connects the internal battery to LED Board lamp heads for a minimum 9 minute emergency illumination. NYC approved and UL listed for damp locations and meets UL924, NFPA 11 Life Safety