Apparatus for disabling an alarm after a predetermined operating

Details Apparatus for disabling an alarm after a predetermined operating Apparatus for disabling an alarm after a predetermined operating

1978-03-23

1979-08-14

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

With particular system function

340521, 340541, G08B 1900

Patent

active

041647360

ABSTRACT:
Apparatus for disabling an alarm after a predetermined operating period employs a relay which is operated by a gate circuit. A contact of the relay applies operating potential to an alarm. An oscillator energizes a counter circuit and after a predetermined selectable period, the counter circuit inactivates the relay via the gate to cease alarm operation.

REFERENCES:
patent: 3979740 (1976-09-01), Forbat et al.

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