May need to select to meet the requirements of the LED type.
可根据需要选择，以满足要求的LED类型。
Led type exit signs are installed in the back-of-house area.
后勤区域的出口标志都采用了省电的二极管。
LED lighting control, LED musical metronome, LED type of engineering control chip.
LED照明控制，LED音乐节拍器、LED种类工程控制芯片。
LED lighting control, LED musical metronome, LED type of engineering control chip.
LED照明控制，LED音乐节拍器、LED种类工程控制芯片。
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