Local control apparatus for central station alarm system

Details Local control apparatus for central station alarm system Local control apparatus for central station alarm system

1983-03-10

1984-07-10

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340506, 340508, 340510, 340517, 340518, 340527, 340528, 340333, 34082506, 3408251, 34082531, 179 5R, G08B 2900

Patent

active

044595824

ABSTRACT:
In a central station alarm system the alarm sensors associated with a particular subscriber's premises are monitored by a local control unit associated with those premises and controllable by the subscriber. The local control unit automatically reminds the subscriber when he is supposed to close the premises and turn on the system. The local control unit allows the subscriber to change his expected closing time. The local control unit may also perform various other functions such as automatically cutting off power to low priority alarm sensors during a prolonged power failure, automatically cancelling any audible alarm indication silence commands when there are no alarms to silence, and automatically forming a bridge connection between the remote ends of two communication circuits when there is a break in either circuit.

REFERENCES:
patent: 3408642 (1968-10-01), Palladino
patent: 3544987 (1970-12-01), McMann
patent: 3881171 (1975-04-01), Moorman
patent: 3978478 (1976-08-01), Schmitz
patent: 4048620 (1977-09-01), Crandall
patent: 4048621 (1977-09-01), Conklin
patent: 4088983 (1978-05-01), Crandall
patent: 4095739 (1978-06-01), Fox
patent: 4114147 (1978-09-01), Hile
patent: 4161721 (1979-07-01), Conklin
patent: 4162488 (1979-07-01), Silverman
patent: 4189719 (1980-02-01), Massa
patent: 4206449 (1980-06-01), Galvin
patent: 4216375 (1980-08-01), Ulch
patent: 4228424 (1980-10-01), LeNay

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