Mircom TX3-TOUCH-F15-B - Figure 77 Lobby Controller Board Connectors on MD-1086 - Bottom

Touch Screen System and Setup
TX3 Touch Screen Installation Manual 87
Figure 77 shows the connectors at the bottom of MD-1086, the lobby
controller that has a 3-pin terminal block for the microphone. This board is
present in Touch Screen models that do not end in -C or -D, for instance TX3-
TOUCH-S15-B and TX3-TOUCH-S22.
Figure 77. Lobby controller board connectors on MD-1086 -
bottom
LED/LAMP
Supply
Speaker
Connection
Input 1
Input 2 Input 3 Input 4
Input 5
Camera Supply
Power Supply for TX3
RS-485 OUT
+
+
RS-485 IN
s +
+
+
+
+−
Microphone
Connection
−
−
−
−
−
−
s +−
+−+−+−