If you were ever worried about your valuable documents, jewelery, or valuables, then this electronic safe is sure come in handy. It is controlled by an electronic system with a permanent memory. The optional code is programmable from 4-10 digits to access the Vault. The lock opens when you enter the correct code and press the lock button to open. In case you forget your security code, you can use the enclosed emergency keys. In order for the safe to perform its function, it must be securely anchored at the points specified by the manufacturer. Maximum security for the safe is provided by 8mm thick walls and 8mm thick security doors.