Wireless alarm system

Details Wireless alarm system Wireless alarm system

1980-07-07

1982-12-07

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340517, 340628, G08B 2300

Patent

active

043630316

ABSTRACT:
A wireless smoke alarm system in which each detector includes a local smoke detector and an alarm. These are coupled to a transmitter and a receiver. The transmitter and receiver are within range of similar units so that an alarm sounded by one unit causes those within range to sound their respective alarms. In sounding their respective alarms, the local units also cause their transmitters to transmit alarm signals thereby overlapping and reinforcing the first unit. A master control is coupled between the alarm detection and local alarm portion and the transceiver to disconnect the unit when the alarm is ended and to transmit a signal to other units, causing each to discontinue their respective alarms.

REFERENCES:
patent: 3257653 (1966-06-01), McCorkindale
patent: 3909826 (1975-09-01), Schildmeier et al.

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