TWI604421B

A photoelectric smoke sensor (1) includes a housing (3) of an explosion-proof structure having a circuit accommodation chamber (18) to accommodate a circuit board (20), an inflow chamber (45) provided in the housing (3) and communicating with the designated exposition-proof zone (Z), a light emittin...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SHIBUYA, TADAYUKI, NUMAO, KANJI, IGUCHI, MASAO, MASUMOTO, SHINTARO
Format:	Patent
Sprache:	chi
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
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