DWELLING UNIT FIRE ALARMING DEVICE

PROBLEM TO BE SOLVED: To surely issue a fire alarm, regardless of the ratio of a current in case of fire and the current in monitoring. SOLUTION: The device is provided with a receiver EQ1 connected through two wires L1 and L2 to fire sensors SE1 and SE2 and the receiver is provided with an interfac...

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Bibliographic Details
Main Author ISHIKAWA KATSUKI
Format Patent
LanguageEnglish
Published 05.08.1997
Edition6
Subjects
ALARM SYSTEMS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TELEPHONIC COMMUNICATION
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