Built-in photosensitive resistor (CDS), Brightness according to ambient light, Automatic IR LED can be opened and closed, More delay infrared lamp working life.

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。

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A light (diode), is on or off, at one end, and a photo-resistor at the other end registers its state.

轻型（半导体），或者是客，一头、照片登记在另一端的电阻状态。

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If the load resistor is a light bulb, the bulb will burn at half brightness when it is first turned on.

如果负载电阻是一个灯泡，灯泡会燃烧一半的亮度，当它第一次开启。

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As it is made entirely out of circuit board, users can solder components directly to it -- such as a light dependent resistor or a microphone to make it respond to sound.

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