Special
Order
Products
LDC-S/A DOOR COM SET
Door Chime & Answering, All Call Communication System
LDC-1C/A
ACC-3/A
- INSTRUCTIONS -
The Door Com system (LDC) is a simple open voice door answering and internal All Call intercom system.
A 2-stroke chime is heard when the door station button is pressed, and can be answered from any inside
station by pressing the door "Talk" button. An internal "All Call" announcement can be made from any
inside station by holding down the "All Call" button. The chime tone can be turned off or adjusted to three
volume levels. The All Call can be muted at any station. Door release can also be included.
Up to 6 inside stations can be included in one system.
IMPORTANT:
LDC-1C/A stations are not compatible
with previous LDC-1C stations.
ACC-3/A
WIRING DIAGRAM:
AC 12V
IN
PT-1210N
~
~
+
LDC-1C/A LDC-1C/A LDC-1C/A
LE-D
DC 12V OUT
+
-
+
-
+
-
Leave
jumper
intact.
E
-
E/-
E
E
E
Wire additional
inside stations
the same as
shown here.
1
DA
C
DA
C
DA
C
DA
C
R
R
R
P2
P2
P2
P2
L
L
L
If 8 conductors are available, run
"L" wire separately. If using 7
conductors, jumper L to P2 for
Door Release.
Door
Strike
RY-PA
Yel
Blk
LDC-S:
DOOR COM SET, includes 3 LDC-1C/A Inside Stations, 1 LE-D Door Station,
1 ACC-3/A Adaptor, and 1 PT-1210N Transformer.
Individual Components for Door Com System:
LDC-1C/A: Inside station for door answering, All Call, and door release. Includes chime volume
control, voice volume control, and All Call mute button.
LE-D:
Surface mount door station, weather resistant. Flush mount LE-DA with stainless steel cover
may be used in place of LE-D. Brass and Antique brass covers are available for the LE-DA.
ACC-3/A: All Call Chime Adaptor, with 3W of output and capable of controlling up to 6 inside stations.
PT-1210N: 12V AC Transformer, 830mA, plug-in style
RY-PA:
EL-9S:
12V DC Relay, 1A, "Normally Open" contacts, required for door release
Electric Door Strike, 12V AC, 300mA
MOUNTING:
LDC-1C TERMINAL DEFINITIONS:
LE-D:
Surface mount to 1-gang box or ring.
+
Positive 12V DC
-
Negative
E
Common Communication
Door Answering and Communication
Chime and All Call Receive
Occupied Circuit
All Call Transmit
Door release Activation (jumper to P2)
LDC-1C/A: Flush mount with BBX-1E rough-in box,
or cut hole in wall 6-1/8" H x 3-3/4" W.
DA
C
R
P2
L
ACC-3/A: Surface mount to 1-gang box or ring.
Locate near transformer (out of sight).
Pg. 1
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