| 摘要 |
PURPOSE: An anti-loss bathroom shelf is provided to sense articles on a shelf by using ultrasonic wave and to inform a user. CONSTITUTION: An anti-loss bathroom shelf is constituted as follows. In a bathroom shelf, articles are detected regardless of the weight thereof. The anti-loss bathroom shelf uses a signal detected by ultrasonic wave and displays information on a door. The signal is received in an ultrasonic wave receiver(1).
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