Rev. 1 - 08/2010
Apartment Intercom Station
The Alpha Communications® IS543 is a universal apart-
ment intercom station which combines modern styling
with ease of operation to provide natural, clear voice
communication and positive door-release operation. The
white, high-impact, ABS plastic faceplate blends with any
decor. The advanced circuitry and versatility permits use
in large or small buildings, with one or several entrances.
The patented* design of this station allows for connection
to popular 5-wire, 4-wire or 3-wire intercom system con-
figurations, with a single model station. In addition, the 2
vertical and 2 horizontal mounting holes allow the IS543 to
mount over a single-gang electrical back box (or mounting
ring) or over the IH101 and/or IH102 flush housing(s). This
replaces at least 6 models of existing intercom stations!
A wide variety of optional accessories is available to
provide additional functions such as multiple entrance
operation, post office door release, etc.
Surface mounting or mounts over flush housing
Simple, push button operation
Patented* design allows use on 5-wire, 4-wire or 3-wire
• Clear voice-quality
Precision-engineered for reliability
English and international (graphic) symbols
Durable, high-impact ABS plastic.
Individually replaceable type push buttons
with self-wiping contacts. Identified for
TALK, LISTEN, and DOOR functions.
2.50" (62.5mm) mylar cone with voice re-
sponse. Also used for electronic tone signal.
Screw terminals standard.
Surface mounts over single gang electrical
box or mounting ring, or right on the wall, or
over the IH101 and/or IH102 flush housing(s)
Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice