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Voice Terminal Power
Voice terminal operation is guaranteed for a wiring run of
Supply Unit
up 1000 feet from the control unit. For a wiring run that
is more than l000 feet from the control unit, you may have
to supply extra power to the voice terminal.
If the power
to one voice terminal is low, it is
probably
more
cost effective to use a Voice Terminal
Power Supply
Unit than an Auxiliary Power Unit. However, if there is a
power demand of over 45 unit loads on one Power Supply
Module, an Auxiliary Power Unit is generally required.
See “Auxiliary Power Units” on page 2-122.
2-130 Adding Accessories