| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radio suitcase theft preventing device for detecting theft prevention with the usage of a vibration detecting element. SOLUTION: This suitcase theft preventing device for transmitting a signal with the usage of the radio wave includes a transmitting unit and at least one of a receiving unit. The suitcase thest preventing device further includes a control switch by which the transmitting unit transmits various control signals and the receiving unit conducts corresponding movements based on the control signals, a vibration sensor for detecting a vibration signal which is generated by the receiving unit when receiving outer force vibration, and an alarm circuit for generating an alarm signal by the signal transmitted from the control switch or the vibration sensor. When the receiving unit cannot receive the control signal from the transmitting unit, the vibration sensor is started to conduct the alarm circuit, vibration detection and alarming. The transmitting unit can directly control the movements of the alarm circuit through the control switch under an emergency condition.</p> |
