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Accommodation hotel or home, the most afraid of thieves come, often resulting in the loss of life and property. Therefore, this design can be portable type hand alarm. It's easy to use, whether it's for your own use or when you're away from home. Through the internal sensing device, it can be installed on the door handle,as long as the door was turned, the sensor issued a whistle signal to remind the user and allow thieves scared. It can be through the Internet information and communication technology of the monitoring system, at any time to know wheth r the home of idlers into the situation.
Kaohsiung City, Taiwan
Li- Jing Yi,
Jia Yun Suo,