7.
Replace and fix the plastic cover using cross-head screws.
8.
Replace and screw back the metal cover.
Grounding
We recommend you to ground the intercom in order to improve the static electricity resistance.
All you need for a proper grounding is a cable of the minimum cross-section of 4 mm
crimp eye.
Push the nut gently at the marked point to slide it downwards. Insert a sufficiently long M3
screw, e.g. Push the screw down to make a gap for the crimp eye.
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