Data communication system
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United States of America Patent
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-
Aug 28, 1990
Issued Date -
N/A
app pub date -
Nov 29, 1988
filing date -
Mar 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication system utilizing the electrical-supply wiring of mains circuit has an interface unit for an intruder-sensor. Unit has a transmitter for sending FSK-modulated messages and a capacitor to store adequate energy to power transmitter only for the time-duration of a message. The system also has a interface unit for a temperature sensor.
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