Hi Dan, Thanks for useful info. Regards Wm.-- > At home: Mac <-> Modem <-> Phone line. > > At Church: Phone line <-> Modem <-> UART <-> Sensor. > > The UART is an electronic device, a chip or two, that converts the > data coming in to RS-232 that the Modem can read. > > The above would work for simple sensors - thermocouples, etc. But > not for complex things like video. > > Look into home and business security type systems. > > They often have wired and wireless sensors, video, etc. Each sensor > includes a small microprocessor and the necessary logic and telecom > device. Some of the more expensive ones will let you relay the data > out of the central control box, via modem. > > - Dan.
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