CM Template Arapahoe County Security Center, Inc. Share: Alarms & Security Arapahoe County Security Center, Inc. Visit Website Request Info 15200 E. Iliff Ave. Unit C Aurora, CO 80014 (303) 745-5500 Arapahoe Security Hours: M-F 8am-5pm Sat 9am-5pm About Map About Full service locksmith company specializing in commercial door hardware, card access, digital locks, safes, mechanical locks and security cameras. Directions SW corner of Iliff and Chambers by Village Inn