What if the battery in the safe is undervoltage or dead?

There are two ways to do this;① Find out the emergency battery box, install four no.5 batteries, and then insert them into the emergency battery box jack of the combination lock. After normal opening, replace the batteries inside the cabinet door.(2) Find the emergency key, insert the emergency key jack, turn left or right 45 degrees, at this time the electronic password lock has been opened, and then open other locks.