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USB转TTL模块CH340G RS232转串口 USB转串口下载线升级板刷机板线

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USB转TTL串口小板5V/3.3V/2.5V/1.8V电平下载烧录线 CH340模块

￥43.6 原价53.6 去抢购

CH340G下载器线STC刷机线 USB转TTL RS232升级小板USB转串口模块

￥57.33 原价67.33 去抢购

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￥103.6 原价113.6 去抢购