Warning device for key

Warning device for key

The invention provides a warning device for a key. The warning device comprises a power module A, a power module B, an operating module, a wireless transmitting module, a wireless receiving module and a warning module. The warning device monitors the position of the key in real time, the key can be...

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Hauptverfasser: LIU WENJUAN, REN CHUNLI
Format: Patent
Sprache:chi ; eng
Schlagworte:
ALARM SYSTEMS
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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creator LIU WENJUAN
REN CHUNLI
description The invention provides a warning device for a key. The warning device comprises a power module A, a power module B, an operating module, a wireless transmitting module, a wireless receiving module and a warning module. The warning device monitors the position of the key in real time, the key can be found in time through early warning and warning, and the warning device enables the key to be found conveniently.
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language chi ; eng
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subjects ALARM SYSTEMS
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
title Warning device for key
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