Single Lobby Control Unit; Figure 10 Single Lobby Control Unit - Mircom TX3 Series Installation And Operation Manual

All units use the PS-4P transformer for the power supply. The door strike power
supply depends on the door strike power requirements.
3.2

Single Lobby Control Unit

Figure 10 shows the simplest configuration.
Figure 10.
TX3 Telephone Access System Installation and Operation Manual
NSL
Control
Unit
T/R
Line1
1 2 3
4 5 6
7 8 9
* 0 # i
Single Lobby Control Unit
Telephone outlet
Central office line
Line1
OR
1 2 3
4 5 6
7 8 9
* 0 # i
TX3 System
29