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APPLICATION
The DUO-COM™ SM222K intercom kit is a multipurpose,
two station intercom (expandable to 2 indoor masters)
suitable for homes, offi ces, or wherever communication
to a single location and convenient electrical door open-
ing is desired. The solid-state design, combined with
low voltage operation, permits easy and simple instal-
lation. NOTE: There is no internal communication be-
tween then two indoor Master Stations.
PROCEDURE
1.
Read installation instructions before proceeding.
2.
Install housings and wiring.
3.
Connect wiring and install equipment.
4.
Apply power and check operation.
Power Supply
IMPORTANT! Connecting any of the enclosed equipment to any power source other than the provided power supply or
a power supply that meets outlined specifi cations, voids all warranties.
Figure 1: SM222 Mounting Diagram
Figure 3: Typical Wiring for one Indoor Master Station
NOTE: The audio, door opener and power
supply cables must be in separate jackets
and not in the same cable jacket.
Alpha Communications •
Toll-Free Technical Line
Web: www.alphacommunications.com
DUO-COM™ SM222K Intercom Kit

Installation Instructions

Use #18 wire for door release
and power supply wiring.
42 Central Drive
•
1-800-666-4800
HOUSING INSTALLATION AND
EQUIPMENT LOCATION
Inside Master (SM222) Station
Locate master station where needed and at a conve-
nient speaking height. Do not locate the master near
any source of direct heat, or too close to transformers,
light dimmers, or other electrical devices or wiring. Do
not install close to or on a common wall with remote
station. Install directly to mounting surface or to a sin-
gle gang electrical box or ring. as shown in Figure 1.
Outside Remote (OR222) Station
For outside remote stations (OR222), install directly to
mounting surface or to a single gang electrical box or
ring as shown in Figure 2. Run wires to the remote sta-
tion as shown in Figure 3 (or Figure 4 if you are using
2 indoor master stations).
Figure 2: OR222 Mounting Diagram
•
Farmingdale NY 11735-1202
Phone: (631) 777-5500
•
AWD187
03/2016
•
Fax: (631) 777-5599
Rev 2