Do all electronic safety boxes have an external power socket?
Generally, there are only some low-end electronic storage boxes.
There are some special low end of the deposit box, it is equipped with emergency keys, no external power jack, no electricity, use the emergency key.
Most electronic safes are the external power source socket, but there are also individual manufacturers to install the batteries in place directly under the electronic panel, did not open the door in the safe state can install and replace the battery, this product is not an external power supply socket
