Intrusion alarm and detection system

Details Intrusion alarm and detection system Intrusion alarm and detection system

1995-07-24

1997-04-15

Hofsass, Jeffery

Communications: electrical

Condition responsive indicating system

Specific condition

341176, 340426, G08B 1300

Patent

active

056213859

ABSTRACT:
An intrusion detection system used to surveil a predetermined space includes a monitor disposed within the space and a remote controller. The monitor contains an intrusion detector for sensing an intruder in the space and a memory circuit for recording any sensed intrusion. The remote controller includes an RF transmitter activated by a button switch the timed closure of which arms the monitor and the pulsed closure of which tests the monitor. The monitor produces an audible or a visual output in response to a test RF signal transmitted by the remote controller to indicate that an intrusion has not occurred. A pulsed closure of the button switch while the monitor is producing the output disarms the monitor. Should the monitor detect an intrusion and/or be disabled by the intruder, the lack of the monitor output in response to the test RF signal transmitted by the remote controller warns a returning occupant, before entering his or her premises, there exists the possibility of confronting an intruder.

REFERENCES:
patent: 4794368 (1988-12-01), Grossheim
patent: 5469151 (1995-11-01), Lavelle
patent: 5473305 (1995-12-01), Hwang

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