Niles MSU140 Installation & Operating Manual page 7

I
N F R A R E D
Wiring
From every IR Sensor location you must "home-run" a
category 5 cable back to the MSU140. Home run means
that an individual cable is connected between each IR
Sensor and the MSU140. See Figure 4.
Figure 4: Home run the
sensor cable from the
sensor to the MSU140.
D
S
T A
T
A
T A
U
S
IMPORTANT – AVOIDING INTERFERENCE
Avoid locating any of the cables, sensors, keypads or the
Main System Unit near any potential sources of Electro-
Magnetic Interference (EMI), such as light dimmers, speed
controls for ceiling fans, electrical ballasts, television sets,
large motors, heaters or air conditioners.
M
A I N
Remotely Located
IR Sensor
SENSORS IN
+
G
12
N
V
D
S U
Y S T E M
number. The lower
the larger the wire,
i.e., 20 AWG wire is
N I T
"TECH TIP"
Wire size is
expressed by it's
AWG (American
Wire Gauge)
the AWG number,
physically larger
than 22 AWG.
6