Library safety fireproof door system

The utility model discloses a library safety fireproof door system which comprises a power supply and an alarm mechanism, and the alarm mechanism is connected with the power supply through a main wire. The alarm mechanism comprises an alarm switch, an alarm lamp and a buzzer which are connected in s...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FAN SHUHONG, YAO LIANG, LI JIANGUO, ZOU JIGANG, ZHANG HONGLI, ZHANG JING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES LADDERS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
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