Yale Standard Digital Safes Series - The truthworthy partner for your home security Features- Feature simple to operate digital keypad with LCD display and a programmable combination of 3 to 8 digits. Solid steel construction for higher resistance to attack Pre-drilled holes (fixing bolts supplied) allow permanent mounting to floors, walls, or most hard surfaces for additional security. Uses 4 AA size batteries (1.5V). In case of battery failure, the safe can be operated with a manual override function with 2 security override keys supplied. Battery compartment is located inside the door to prevent tampering. Incorrect Entry Alarm feature - Inputting the incorrect code 4 times sounds an internal alarm for 3 minutes and locks out the code pad for that time. Manual override can be used during alarm. Black power coat interior and exterior finish.