Electrical circuit for the air-conditioned rooms, passenger and goods lifts, general and other equipment failures, lighting, sound, the signal can also be used to connect ON / OFF auxiliary contacts.
用于空调房间电气线路，乘客和货物的提升，通用等设备的故障、灯光、音响、信号，也可以用于连接ON/OFF辅助接点。
Electrical circuit for the air-conditioned rooms, passenger and goods lifts, general and other equipment failures, lighting, sound, the signal can also be used to connect ON / OFF auxiliary contacts.
用于空调房间电气线路，乘客和货物的提升，通用等设备的故障、灯光、音响、信号，也可以用于连接ON/OFF辅助接点。
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