Interlogix AR7400 Series - Manual (Page 2)

AT74000
AUDIO INPUT
3
2
1
Ground
Audio +
Audio -
AR7400
AUDIO OUTPUT
3
2
1
Ground
Audio +
Audio -
NOTE:
For an unbalanced connection, tie pin 1 to pin 3 on the AT only, and utilize pins 2 and 3
for the audio output.