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Option connector4-5
GT-2C-L
GT-2C
GT-1C-L
GT-1C
DC
DC
RY
RY
SW
SW
GT-1M-L
GT-MK
GT-1A
GT-1D
KE
C
K
CE
RY
RY
SW
SW
K
KE
RY
RY
SW
SW
S1
S1E
S2
S2E
S3
S3E
V+
V
-
DC
DC
RY
RY
SW
SW
DC
DC
RY
RY
SW
SW
SW
SW
RY
RY
2
B
A
C
3
E
D
F
5
K
J
L
8
U
T
V
4
H
G
I
6
N
M
O
1
0
9
Y
X
W
Z
7
R
Q
P
S
Emergency alarm
Emergency alarm (JP1
is cut during use.)
Doctor call
(Automatic entry)
Doctor call
(Automatic entry)
Doctor call
(Automatic entry)
(Brown)
(Brown)
(Yellow)
(Yellow)
(Yellow)
(Brown)
(Red)
(Red)
(Orange)
(Orange)
(Orange)
(Red)
Call transfer
Doorbell
Call transfer Call transfer
Call transfer
(Blue)
(Orange)
(Blue)
(Blue)
(Blue)
(Orange)
(White)
(Yellow)
(White)
(White)
(White)
(Yellow)
Video out
Display
transfer
Option contact output
Call transfer
Option contact
output
Option contact
output
Option contact
output
(Gray)
(Blue)
(Gray)
(Gray)
(Gray)
(Black)
(White)
(Black)
(Black)
(Black)
Security/Utility
input 1
Option contact
output
(Orange)
(Gray)
(Black)
(Black)
Security/Utility
input 2
(Yellow)
(Black)
Security/Utility
input 3
(Purple)
(Black)
12-pin option connector
Option connector
Option conne
ctor
Option connector
Option connector
4-pin option connector
(not included)
•
Expanded video bus control unit GT-VBX
Connector cable length: 40 cm
• Expanded bus control unit GT-BCX
There are 4 groups each of R1 and R2 terminals on each trunk line terminal including COMMON1, COMMON2, SUB1A, SUB1B, SUB2A, and
SUB2B. Terminals with the same name are connected together in the same trunk line terminal, so these trunk line terminals can be used as distribution
points.
For connecting the lift control adaptor GTW-LC, refer to the GTW-LC Installation & Operation Manual.
• Bus control unit GT-BC
Do not connect 2 or more GT-BC units on the same trunk line.
1. To prevent shorts, be sure to cut unused lead wires at the bottom and insulate the ends.
2. Screen settings are necessary for the GT-2C-L/GT-2C. Make sure to refer to "SETTINGS (GT-2C-L/GT-2C)" to perform screen settings.
Option contact
output
Call transfer
These are not
used.
(Yellow)
(Orange)
(Blue)
(White)
(Gray)
(Black)