The remote controller should be equipped with safe switch, and the power of remote controller is supplied by button battery.
遥控器应该设置安全开关，避免误触，造成尴尬，遥控器用纽扣电池供电。
The remote controller should be equipped with safe switch, and the power of remote controller is supplied by button battery.
遥控器应该设置安全开关，避免误触，造成尴尬，遥控器用纽扣电池供电。
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