LEDs have been around for some time, but mostly blinking away as little red indicator lights in electronic equipment.

LEDs问世有一段时间了，但是主要作为电力器件上可以忽略不计小型红色指示灯。

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ZPB Remote Button Box use of far distance control start, stop, emergency stop and shut off fans & oil pumps of various kinds of electrical equipment and display working state by indicator.

ZPB遥控按钮盒供远距离控制各种电器设备的启动、正转、反转、紧急停止及风油切断等用处，并通过指示显示工作状态。

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The inside equipment seems a bit not well maintained. The ventilation fan switch is broken, and the interior floor indicator shows 'G' with the car actually at 1/F.

内笼的设备看来有些少维修不妥当：抽气风扇的开关掣破烂了，而机内楼层显示器于客卡实际上在1字楼时却显示'G'。

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