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Contact Closure
The Niles MSU480 provides a contact closure that can be
triggered one of two ways:
1. The presence of status voltage on the 3-30V AC/DC status
input jack or
2. Discrete infrared on and off commands.
Set the contact closure dip switch, located above the screwless
connector, to the appropriate position for triggering
(Figure 8).
The discrete on and off commands are available for download
at: www.nilesaudio.com/techsupport
Power Status — Introduction
The Niles MSU480 status port accepts 3-30V AC/DC input
voltage and provides a visible status indication at the infrared
sensor or IntelliPad.
When the MSU480 sees 3-30V AC/DC at the status jack it
broadcasts a status signal over the IR sensor wires. Any appro-
priate sensor or keypad connected to one of the sensor wires
will display power status.
CO
NTA
CT
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OSURE
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Figure 8 Contact closure
NOTE:
The MS100 and CS100
sensors do not provide
status feedback.
DS00330ACN/MSU480 12/19/03 9:05 AM Page 14