Axis 2N LiftIP User Manual page 21

2N ® LiftIP Electronics Panel Mounting
What you need to mount the electronics panel onto the lift button panel:
four 57 (W) × 122 (H) mm spot-welded M4 screws;
sufficiently perforated speaker area (may be larger than as shown in the figure
but may never exceed the panel size
microphone hole;
two LED holes if necessary.
Mounting Drawing for 50 mm Speaker Installation
If you use other than the prescribed screws, make sure that the isolation distance
between the electronics and substandard fitting elements is 2 mm at least. Make sure
that the panel is fitted perfectly to avoid resonance during operation. There may be no
gap between the lift button panel and the
properly to eliminate acoustic fault of the speaker and acoustic feedback between the
speaker and microphone (see below).
Caution
Make sure that microphone hole is sealed properly to record only sounds
from the cabin instead of the noise from the shaft or space behind the
panel.
2N TELEKOMUNIKACE a.s., www.2n.cz
to avoid acoustic fault);
®
2N LiftIP panel, or the gap must be sealed
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