Sure Lites, Dual LED Emergency Light, Designed To Reduce Egress System Cost & Maintenance As Well As Improve Reliability, Includes Long Life LEDs, Proprietary Adjustable, 300 Lumen Acculed Optics, A Nickel Cadmium Battery & A Rugged Sheet Metal Housing, External Battery Disconnect & EZ Hang Features Reduce Installation Time & Cost, Minimum Of 90 Minutes Of Run Time, City Of Chicago & New York City Compliant, 5 Year Warranty.