An area where it will obstruct traffic, for example,
an indoor hallway or near the entrance or exit of
a room.
An area where it will be exposed to fire, heat or
direct sunlight (suitable ambient temperature is
32°~+122°F., 0°~+50°C.).
A dusty area (where there is metal dust or dirt).
Near a storage place for chemicals, oil, etc.
An area subject to vibration.
Near high-voltage equipment.
In a strong electric field.
Near equipment vulnerable to the influence of an
electric field.
3-2. Stations
Particular attention should be given to the following
points during installation.
Choose a desk-type, flush mounting type or desk/
wall type station according to the user's need.
If the zone paging function is adopted, precautions
should be taken to ensure against feed-back due to
interference between the station (microphone) and
the paging speaker; that is, they should be instal-
led facing different directions or separated from
each other as far as possible.
The "para-branching" operation or the connection
of more than one station to one circuit is not
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