Alpha Communications DUO-COM SM222K User manual

Alpha Communications • 42 Central Drive • Farmingdale NY 11735-1202
Toll-Free Technical Line 1-800-666-4800 • Phone: [phone] • Fax: [phone]
Web: www.alphacommunications.com • Email: [email protected]
DUO-COM™ SM222K Intercom Kit
Installation Instructions
AWD187
Rev 2
03/2016
APPLICATION
The DUO-COM™ SM222K intercom kit is a multipurpose,
two station intercom (expandable to 2 indoor masters)
suitable for homes, offices, 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.
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
Figure 3: Typical Wiring for one Indoor Master Station
Figure 1: SM222 Mounting Diagram
NOTE: The audio, door opener and power
supply cables must be in separate jackets
and not in the same cable jacket.
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 specifications, voids all warranties.
Use #18 wire for door release
and power supply wiring.

Figure 4: Typical Wiring for two Indoor Master Stations
NOTE: The audio, door opener and power supply cables must
be in separate jackets and not in the same cable jacket.
Use #18 wire for door release and power supply wiring.
WIRING INSTRUCTIONS
Run two-conductor twisted #22 (max 350’ or 105m)
or #20 (max 500’ or 150m) cable between the re-
mote station and the master station locations. If the
cable runs near any AC wires, please make sure this
wire run uses shielded cabling.
Run two-conductor #18 cable between the master
station and the power supply locations.
Run two-conductor #18 cable between the master
station and the door strike locations. Make sure to
leave sufficient cable at each end to make connec-
tions (approximately 10” or 25cm).
Note: If door release functionality from the mas-
ter station is not required for your application, the
‘DOOR’ button may be utilized for other signaling
purposes. Run the door release cable to the optional
signaling device (bell, buzzer, etc.) which must be
able to operate on 12VDC (or 16VAC if the master is
powered by 16VAC).
© Copyright 2016 Alpha Communications®. All Rights Reserved.
OPERATION AND CHECK-OUT INSTRUCTIONS
At Outdoor Remote Station
• Push button to call master, release to listen.
At Indoor Master Station(s)
• Push ‘TALK’ button to speak, release to listen.
• Push ‘DOOR’ button to release door.
• Push ‘OFF’ button to silence speaker. Station will re-
main in monitor mode if ‘OFF’ button is not pressed.
• Press ‘TALK’ button to re-activate speaker
• Adjust volume with small screwdriver as needed
through small opening in front of master station.
NOTE: Distortion, howling or feedback may result
if volume is too high.
Auto-Listen Mode
• By default, the Indoor Master Stations are set to be in
Auto-Listen Mode. In order to turn offAuto Listen Mode
gently remove the small plastic jumper on the rear of
the unit marked J7. This will cause the station(s) to go
into listen mode when a call is placed only after first
having pressed the ‘TALK’ button.