Fire audible and visual alarm

The utility model discloses a fire audible and visual alarm, which is characterized in that a PCB (printed circuit board) and a loudspeaker adopt an integrated structure and are positioned and mountedas a whole, so that the limiting firmness degree and the internal space utilization rate are improve...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU QIANJIANG, HU JUANJUAN, ZHOU ZHIPING, DING ZHU, CHEN YUQUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!