暗，一个形容光线亮度的词。对于灯光控制装置，暗的反义词是亮。
Dim, a word value of light. For light control devices - dim is the opposite of bright.
一般情况下，可以由相机来测定整个画面的光线亮度，并确定最佳曝光量。
In general, the camera to determine the whole picture of the radial brightness, and the optimum exposure.
内置光敏电阻(CDS)，根据环境光线亮度，可自动控制红外灯开启与关闭，更能延缓红外灯的工作寿命。
Built-in photosensitive resistor (CDS), Brightness according to ambient light, Automatic IR LED can be opened and closed, More delay infrared lamp working life.
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