Riello Net Dialog NDG 800 Manuel D'utilisateur page 34

1) Remove the screw fixing the little panel at the
bottom of unit
2) Pull down to the limits, then pull forward
5) First rotate to small angle,then pull down.
You can disassemble the panel
6) Remove screw and remove the battery
cover
Model: NDG 2000
3)
7)
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Disassemble the little panel
4) Remove the screw
Remove the wire, then you can replace
the batteries