Fire alarm system

Details Fire alarm system Fire alarm system

1982-09-23

1985-10-01

Myracle, Jerry W.

Communications: electrical

Condition responsive indicating system

Specific condition

G08B 2100

Patent

active

045449210

ABSTRACT:
In the fire alarm system comprising a pair of alarm lines, a plurality of fire detectors connected between said alarm lines and a receiving unit connected at the proximal end of the alarm lines, and generating a fire alarm in response to an alarm signal raised by one or more fire detectors, an improved system in which disconnection of alarm lines and number of fire detectors producing alarm signals can be indicated, is disclosed.

REFERENCES:
patent: 4161727 (1979-07-01), Thilo et al.
patent: 4369435 (1983-01-01), Adachi et al.

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