Rev. 3 - 11/06
Master Intercom Station
The Alpha Communications® IR204ETS are surface
mounted intercom stations which combine modern styl-
ing with ease of operation to provide natural, clear voice
communication and monitoring of a remote intercom
station. The attractive white, high-impact, ABS plastic
faceplate blends with any decor. The advanced circuitry
and versatility permits use in large variety of specialized
An built-in Toggle Switch enables the station to stay in the
'Listen' mode. Simply depressing the 'Talk' button, or
depressing the optional model ST-FOOT foot switch will
override the 'Listen' mode and place the station in 'Talk'
mode. The Door button is not usually used for these
applications, but it can be used for another signaling
purpose if needed.
Simple, push button operation
• Built-in 'Listen' mode Toggle Switch
• Advanced design
• Clear voice-quality
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,
and built-in 'Listen' mode Toggle Switch.
2.50" (62.5mm) with voice response. Also
used for electronic tone signal.
Screw terminals standard and two (2) pig-
tail wires for optional foot switch connec-
Single gang ring or single gang electrical
outlet box. Can be used with optional model
IH400A plastic desk/wall cabinet.
Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice.
(shown with built-in Toggle Switch)
ARCHITECTS' AND ENGINEERS'
Master intercom station(s) shall be Alpha Communica-
tions®/Tektone model IR204ETS or approved equal,