Vevor SS-630DZ Questions & Answers
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WHAT IS THE EXTERNAL POWER BOX FOR
The external battery box serves as an emergency backup power source for the electronic lock.
If the internal battery is dead, the key is damaged or lost. You can connect the external battery box to power the electronic lock and access the safe using your digital password. Insert the external power box, enter the personal password or management password, press "#", then turn the knob anticlockwise to open the door.
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