How To Open Sentry Safe 1200 Without Key. 0.2 change the batteries regularly! 1 my batteries have still died:
1.3 my batteries are dead, and i’ve lost the key. And best of all, most sentry safes can be opened without any damage to the safe.
18 Cubic Feet Digital Electronic Safe Box Keypad Lock
And the battery case is inside the safe: And the battery case is on the outside of the safe: