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Initially I was looking at strictly telephone entry systems like the TX3-200-4U. However, a couple of owners in the building with backgrounds in software and electronics were interested in a more sophisticated system. So now we are considering Mircom’s TX3-Nano. As far as I understand it can operate as a telephone entry system, but also using a smartphone app that shows video of the visitor, and also through small screens installed in each unit.
Unfortunately we found out that our existing intercom wiring will not support the small screens in the units. (The screens require a minimum of an individual Cat-5 cable to each unit, but our old intercom only has a single Cat-3 cable serving three units per cable.) Changing the cables would be near impossible because they weren’t installed in conduit and instead were installed by stapling them to the building frame.
We might still go with the TX3-Nano though so that we have the smartphone app capability.
