Metal card holder detection device

The invention discloses a metal card holder detection device which comprises a detection module and a magnet, wherein the detection module comprises a detection unit, an indicating unit and a magneticswitch; the detection unit is electrically connected with the indicating unit through the magnetic s...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YUAN XINFANG, FANG JIASEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING
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