External Battery Pack with 2.5mm DC Jack for Some Safe Box DGZZI 4 AA Battery Holder 6V Backup Power Source with Wires for The Safe

The battery box is made of high-quality flame-retardant materials, which are resistant to high temperature, good electrical conductivity, durable, not easily deformed, and have a long service life. With 2.5mmDC male plug, no welding, easy to connect, output voltage: 6V. In the event of a battery failure, the safe can be accessed by inserting an external battery pack into the module on the safe. The battery pack will power the module, allowing you to access the safe with an enrolled fingerprint or password to replace the battery. Works with some safes, gun safes, key safes with external battery power.