Press the numbers "159" on the Bunker Hill safe's digital keypad.
Press the "A" key immediately after you have entered the numbers.
Wait for the green light on the keypad to shine, then turn the knob once.
Immediately pull the handle on the door of the safe to open it.
Remove the detachable front panel cover of the safe.
Insert the override key into the now exposed lock and turn clockwise.
Turn the knob once, then turn the safe's handle and pull open the door.