Combination security unit

Details Combination security unit Combination security unit

1994-10-19

1997-01-14

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

340531, 34082531, 34082532, G08B 522

Patent

active

055944280

ABSTRACT:
A security system includes a small hand held remote unit which allows a user to communicate with an inside receiver/transceiver. The inside receiver/transceiver is battery powered and operates in a low power draw standby state until activated to a higher power draw state by receipt of an activation signal from the small hand held remote unit. Signals from the small hand held remote pass through a light transmitting medium forming part of the walls of the premise being protected. The inside receiver is positioned relative to the light transmitting medium to receive signals from the remote unit and produces a visible indication of the status of the system. This arrangement allows arming and disarming of the system from outside the area being protected.

REFERENCES:
patent: 4692762 (1987-09-01), Lewiner et al.
patent: 4723121 (1988-02-01), van den Boom et al.
patent: 4786900 (1988-11-01), Karaswa et al.
patent: 4908604 (1990-03-01), Jacob
patent: 5043721 (1991-08-01), May

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