Security alarm system
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United States of America Patent
Stats
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Dec 17, 1985
Grant Date -
N/A
app pub date -
Apr 6, 1983
filing date -
Jun 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A security system comprising a plurality of sensors for detecting emergencies in a predetermined guard area, a transmitter-receiver for converting the emergency data into electric signals and transmitting the electric signals via a radio, a repeater for receiving the electric signals from the transmitter-receiver and transmitting the signal to a security controller, a security controller for setting a guard mode such as 'start watch', and 'release the watch' and transmitting the emergency and ordinary data to a central station through a transmission line such as a telephone cable or personal circuit, and a central station for supervising the predetermined guard area based on the data from this and other security controllers.
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