16-Guage Steel Outside, Soft Foam Inside, Built-In Computer Blocks Access After Repeated Invalid Keypad Entries. Tamper Indicator Alerts You to Invalid Entry Attempts. Motion Detector With Audio Alarm Helps Guard Against Direct Tampering. Mounts Almost Anywhere, in any direction. Interior Courtesy Light for More Convenient Access. Power Connection Jack for External Power Supply; Adaptor Included. Audio Disable Option Adds the Security of Operating in Silent Mode. Outside Dimensins: 10.1″W x 7.9″H x 14″D 14lbs.