Failure detector for warning device

A fire detector capable of detecting its own malfunction by itself and also capable of quickly announcing a failure of high-level emergency in the fire detector. A plurality of determining values (Vu,Vd) are established for the output level (SLV) of a physical quantity detecting means for detecting...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	SHUNICHI MORITA
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
Online-Zugang:	Volltext bestellen
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