ACTUATION CONFIRMATION CIRCUIT FOR FIREPROOF FACILITY

PURPOSE:To provide a circuit for detecting and displaying automatically continuation of a line in an actuation confirmation circuit for a fireproof facility by improving the conventional circuit requiring three wires to two-wire system of power cords.

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Bibliographic Details
Main Authors KONDOU TSUTOMU, AKIYAMA KAZUHISA
Format Patent
LanguageEnglish
Published 05.01.1977
Subjects
ALARM SYSTEMS
FIRE-FIGHTING
HUMAN NECESSITIES
LIFE-SAVING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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