Speaker/Mic Module-'Bus'-Brown Used with HT3011 Type S.T.R. 2 Wire 'Bus' Handsets Only and Modular Style Panel(S). The TSMBB is used with the 2-wire (loop) type ReliaBUS™ apartment handsets (i.e. HT3011, HT2011).
The TSMBB speaker/microphone designed to be used with modular series door entry stations. It features a weather-resistant speaker, long-life electret condenser microphone, illuminated drycontact low voltage light pushbutton and plug-in connector for easy wiring. It is 3.94"w x 3.94"h (100mm x100mm), and is made to snap into the MT series modular panel trim frame(s). To service it, once installed, use the model 13510 key / tool unit.
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