Safe. I don't know what brand can't be opened. The key doesn't work. The undervoltage lamp is on. I don't know why. I hope you can help me. Thank you
Tell you, if the battery doesn't work, then you just have to press a little faster, and wait until the screen is black, then press ok! I won't be wrong, follow me.
Or you need to find an external battery box for your safe and plug it in on the door panel of the safe.If you can't find an external battery box, look at the sign of your safe and buy one at the point of sale.
The undervoltage light indicates that the battery in the safe is dead and needs to be replaced.Find your master key and open it with the emergency key.
