Electronic lock can easily be programmed by the user with a "safety key" override. 20 second warning ï¿½beepï¿½ will be actived and time out period after 3 incorrect combination attempts. The safe runs on 4 x aa-size 1.5v batteries, with 3000-time operation life expectancy of battery.Safes have 4 pre-drilled holes for mounting to the floor, wall or cabinet. The item "Digital Electronic Large Safe Box Keypad Lock Security Home Office Hotel Gun" is in sale since Monday, December 11, 2017. This item is in the category "Sporting Goods\Hunting\Gun Storage\Cabinets & Safes". The seller is "sourceplus" and is located in South El Monte, California. This item can be shipped to United States.