Construction site alarm device

The utility model relates to the technical field of safety management and control, in particular to a construction site alarm device which comprises an alarm mechanism, a mounting device movably connected with the rear portion of the alarm mechanism in a penetrating mode, a loudspeaker fixedly conne...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG GUOSONG, WANG ZUOCHENG, LI WEIYUAN, ZHU HUI, YANG SHIYU, WANG YONGHANG, YANG YUMEI, ZHAO WENHUI, ZHANG JING, ZHANG TIANMING, WANG YURONG, LI JIANBO, LUO GUIPING, ZHANG NANCHUAN, ZHANG YUECHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS
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