... 工控机：traffic control host 红灯信号检测器：red light detector 控制适配器：traffic control adapter ...
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If your smoke detector is working properly, the red light should be on.
如果你的烟雾探测器运作正常，红灯应当亮起。
Do the following to ensure the safe operation of your smoke detector: if your smoke detector is working properly, the red light should be on.
为确保您的烟雾探测器的安全运行，请执行以下操作：如果烟雾探测器正常工作，则红灯常亮。
Function of under and upper thread auto detector, red light displayed on the thread broken position.
底面线自动检测功能，断线位置亮红灯显示。
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