Radio alarm security system

Details Radio alarm security system Radio alarm security system

1995-03-09

1998-06-30

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340531, 340693, G08B 108

Patent

active

057740500

ABSTRACT:
The radio alarm security system, particularly for the protection of persons within a building against intruders, includes a mobile central alarm unit which is provided with a separate power source and is temporarily connectable to at least one charging station, and includes a receiver unit for the radio signals of alarm indicators, with a transmitter unit for producing radio signals for activating alarm generators as well as with an optical and acoustic display device for the received radio signals and at least hand-activatable initiating device for the radio signals activating the alarm generators.

REFERENCES:
patent: 3833895 (1974-09-01), Fecteau
patent: 4157540 (1979-06-01), Oros
patent: 4257038 (1981-03-01), Rounds et al.
patent: 4442426 (1984-04-01), Heuschmann et al.
patent: 4446454 (1984-05-01), Pyle
patent: 4833449 (1989-05-01), Gaffigan
patent: 4906972 (1990-03-01), Spencer
patent: 5257007 (1993-10-01), Steil et al.
patent: 5365217 (1994-11-01), Toner

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