电源开关位于后盖一起交流入口，所有其他的旋钮和插孔都在前线。
The mains switch is located on the rear cover along with the ac inlet, all the other knobs and jacks are on the front.
主导生产LED触觉轻触开关。防尘轻按轻触开关。限位检测开关。防水声频耳机插孔。
The main production LED tactile touch switch. Dust light touch switch. Limit detection switch. Waterproof audio headphone jack.
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