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All electrical equipment and equipment installation, maintenance, etc. must be electrical permit to operate, and can not live line work.
所有电气设备及器材的安装、维修等必须由持证电工操作，并不得带电作业。
The existing three-lane system is the smart remote control switches wiring, switches and the need to live, zero line, light line can work.
现有的智能遥控开关是三线制接线方式，开关需要同时接火线， 零线，灯线才能工作。
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