When power indicating lamp lighting, the equipment processing power.

电源指示灯亮, 装置即接通电源.

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Built - in rotary switch, button, ampere meter, indicating lamp etc.

内装转换开关 、 电流表 、 按钮 、 指示灯等.

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No indicating lamp for escape and emergency illumination.

走廊应有疏散指示灯及应急照明.

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For observation of data at night, it could be equipped with indicating lamp without power source.

可配无源指示灯,以便夜晚观察数据.

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When occurs exceptionally, informs in the point source to have the unusual condition the indicating lamp.

发生异常时, 告知点源内出现异常状况的指示灯.

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