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Rev. 3 - 09/08
TSMB3 Series QwikBUS™
Modular Series Door Stations
The TSMB3 series speaker/microphones are de-
signed to be used only with Alpha Communica-
tions®/S.T.R.™ QwikBUS™ modular series door
The TSMB3 series is used with the 2-wire or 4-wire
(loop) type QwikBUS™ apartment handset inter-
com stations, open-voice apartment intercom sta-
tions and/or video monitor stations with handsets or
All TSMB3 speaker/microphone modules feature a
weather-resistant speaker, long-life electret con-
denser microphone, illuminated dry-contact low volt-
age light pushbutton and plug-in connector for easy
All TSMB3 speaker/microphone modules are avail-
able in three (3) finishes; Titanium (suffix-T), White
(suffix-W) or Brown (suffix-B).
All TSMB3 speaker/microphone modules are 3.94"w
x 3.94"h (100mm x 100mm), and are made to snap
into the MT series modular panel trim frame(s).
To service the TSMB3 series modules, once in-
stalled, use the model 13510 key / tool unit.
NOTE: When calling more than four (4) inside
QwikBUS™ video monitor stations at one time,
add the Suffix -8 to the model# shown, for a
different version of this speaker/microphone
module that allows calling up to eight (8) video
monitors from a single call button.
Due to continuous product improvement, all colors, sizes, materi-
als, finishes and specifications are subject to change without notice.
(shown in Titanium finish)
ARCHITECTS' AND ENGINEERS'
Speaker/microphone module(s) shall be Alpha
TSMB3 series or approved equal. Speaker/mi-
crophone module(s) shall snap into the corre-
sponding MT series modular panel