This is a California-approved Firearm Safety Device that meets the requirements of Penal Code section 23655 and the regulations issued thereunder. Electronic lock has an easy to read key pad and includes a low battery warning light. Time out period after 3 incorrect combination attempts. Back-up key is included. Solid steel, pry resistant door has concealed hinges and 2 steel live action locking bolts. Includes 2 removable shelves. Document folder provides easy storage for receipts, passports, etc. Straps allow pistols to be mounted to the back. Safe has pre-drilled holes for mounting into the wall between studs built for standard 16" on center walls. Not recommended for storing CD's or other electronic storage devices. Fastening hardware is included with each safe.