The ACE Circular exit series is an architectural grade, die-cast aluminum, UL 924 code compliant product. The self-powered version will operate for a minimum of 90 minutes during a power outage. Key features include a patent pending circular form factor, an LED source with red or green output, a no maintenance nickel cadmium battery, universal mounting along with a 5-year product and 7-year pro-rated battery warranty. Stocked colors include white, black and silver with black trim. The series comes standard with labor savings self-diagnostics adn is available with a 2 circuit option or as special signage. The color and pattern of the face plate can be specified for both exit and signage applications.