1.9 Wiring for Single Unit – Intercom Mode
DOORKING, INC., INGLEWOOD, CA 90301
Date: Dwg. No. Rev.
Title:
2/09 A
M1812P-003
1812 Plus –single system.
Basic wire connections intercom mode.
3
5
AWhen connected directly to a single telephone or an un-
used C.O. port on a PBX or KSU system, use the PHONE
OUT terminals only. The 1812 must be programmed for
INTERCOM mode using this configuration.
When the 1812 is programmed for intercom mode, it
provides the constant source of DC voltage necessary for
communication. The intercom mode also disconnects the
phone in terminals (1 and 2) since they are not used.
Be sure that the 1812 is programmed in the intercom mode
when connecting the unit as shown above.
Mag Lock
Power 16.5 VAC
20 VA
1
2
4
4
A1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Mic
Vol
Master
Code
1234567891011
Speaker
Vol
Keypad
This device is powered by a 16.5 VAC
transformer. DO NOT power this device with a
24 VAC transformer or power source.
2
Magnetic locks or electric strikes must be powered from a separate UL Listed power
transformer. Do not power strikes or magnetic locks from the 1812 power transformer.
3
1
4
5
Use minimum 18 AWG wire for runs up to 100 feet; 16 AWG wire for runs up to 200 feet. It
is recommended to keep power wire runs as short as possible. Check the power wire chart
for wire size / distance.
Be sure to properly ground all devices. Minimum 12 AWG wire.
Use supplied 16.5 VAC, 20 VA power transformer or UL Listed equivalent. DO NOT
Power this device with a 24 Volt transformer or source voltage.
Phone
Jack
Use only twisted pair telephone wire that is rated for direct underground burial. DO NOT
use wire that is intended for indoor applications. Recommend Cat5e Gel Filled
(flooded) UV Resistant Direct Burial Cable. DO NOT run telephone wires and high
voltage wires in the same conduit. Check the phone wire chart for wire size / distance.
Vehicular Gate
Operator
Pedestrian
Gate / Door