Lower computer is mainly responsible for collecting the field temperature and send it to host computer,when the temperature exceeds the alarm temperature,triggering an alarm.
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It offers a confined detection area, so tagged items can be displayed closer to the door without triggering an alarm.
该系统提供一个封闭检测区，所以标签商品能挨着出入口陈列，而不会触发警报。
A runaway cobra, worth just 70 euros, has cost a small city in Germany hundreds of thousands of euros in an "alarm fee, " triggering extensive dispute in the country.
一条价值70欧元的眼镜蛇逃脱，竟让德国小城付出数十万欧元的“警报费”。这引起了德国各方争议。
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