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