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42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • Email: email@example.com
Rev. 2 - 05/07
DTSM Series Speaker/
Microphones for 'Digital'
Modular Series Door Stations
The DTSM series speaker/microphones are de-
signed to be used with Alpha Communications®/
S.T.R.™ digital-dial modular series door entry
The DTSM series is used with the 2-wire (loop)
type ReliaBUS™ apartment handsets (i.e. HT3011,
All DTSM speaker/microphone modules feature a
weather-resistant speaker, long-life electret con-
denser microphone, illuminated dry-contact low
voltage light pushbutton and plug-in connector for
All DTSM speaker/microphone modules are avail-
able in three (3) finishes; Titanium (suffix-T), White
(suffix-W) or Brown (suffix-B).
All DTSM 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 DTSM series modules, once in-
stalled, use the model 13510 key / tool unit for
installation and servicing if needed.
Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice.
(shown in Titanium finish)
ARCHITECTS' AND ENGINEERS'
Speaker/microphone module(s) shall be Alpha Com-
munications®/S.T.R.™ DTSM (2-wire loop) Relia-
BUS™ series or approved equal. Speaker/micro-
phone module(s) shall snap into the corresponding
MT series modular panel frame(s), and shall be used
with the digital-dial type panel(s) only.
Speaker/microphone module(s) shall be finished in
Titanium (suffix-T), White (suffix-W) or Brown
(suffix-B), and shall feature a weather-resistant
speaker, long-life electret condenser microphone,
illuminated dry-contact low voltage light pushbutton