../ UT-1208U 机架式工业级RS-485集线器(weixin).mp4 20-Jul-2020 13:28 1M UT-1208U 机架式工业级RS-485集线器.mp4 20-Jul-2020 11:43 97M UT-1208U主图视频（京东）.mp4 20-Jul-2020 17:45 87M UT-1208U主图视频（淘宝）.mp4 20-Jul-2020 17:47 58M