Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1998-03-12
1999-09-14
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular coupling link
3406911, 3406936, 340692, G08B 108
Patent
active
059529199
ABSTRACT:
An alarm system is provided including a plurality of remote units each having a fire or burglar alarm for generating an activation signal. A transmitter is situated within the housing for transmitting a signal via free space upon the receipt of the activation signal. Next provided is a central dispatch station including a radio receiver for receiving the signal from the transmitter of at least one of the remote units for dispatching emergency personnel to the at least one of the remote units.
REFERENCES:
patent: 5117223 (1992-05-01), Tanner
patent: 5153567 (1992-10-01), Chimento
patent: 5257007 (1993-10-01), Steil et al.
patent: 5382943 (1995-01-01), Tanaka
patent: 5460228 (1995-10-01), Butler
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