In just a few years, every door lock, card reader, video camera, vehicle, power meter, and light switch will have an IP address — at least in the business world.

数年之内，至少在商业领域，每一个门锁，每一个读卡器，每一个摄像头，电表，甚至是电灯开关都会被赋予一个IP地址。

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The amount of solar power falling on one square meter in full sunlight is about what is needed to light one quite strong electric lamp.

全部受阳光照射的一平方米面积上所得到的太阳能，大约相当于一盏非常强的电灯所需要的能量。

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If the power light is still not on, check whether or not the main switch is with AC380V voltage by the universal meter.

如果电源指示灯同样不亮，请用万用表测量总开光是否有AC 380v的电压。

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