Panasonic KX-NS500 Installation Manual page 97

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4.2.12 Backup Battery Connection
2.
Connect the Back-up Battery Cable to a set of 3 identical backup batteries.
Battery Connector Cover
Battery Connector
Back-up Battery Cable
Fuse
Battery Switch
Red
Black
Backup Batteries (VRLA 12 V DC x 3)
Installation Manual
97

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