The system also has the function of sound and light alarm, and it can set the alarm value by the upper and lower button.
该系统还具有声光报警功能，并可通过按键对报警上下限进行设置。
The system also has the function of sound and light alarm, and it can set the alarm value by the upper and lower button.
该系统还具有声光报警功能，并可通过按键对报警上下限进行设置。
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