An electric combination safe comes with a factory default code for its password--usually something simple, such as 7-7-7 or 1-2-3-4-5. Press the "Enter" button, type in the code, and press "Enter" again.
If you have already chosen your code, press "Enter" to signal the safe that you want to open it. Enter your code, press "Enter" again and wait for the click. Electronic safes have a time delay, according to ValueSafes.com.
Electronic combination safes temporarily block further attempts to open them after a number of incorrect entries, usually four or five, according to ValueSafes. This is a security measure against people trying to guess the combination.