美国埃施朗PL3120模块版本，电力线传输模块，内含PCB（请用PADS或PCAD或AD09打开）及原理图，电力载波技术的福音，中文网上仅此一份，之前上传了pl3150-U.S. Echelon PL3120 module version, power line transmission module, containing PCB (Please use PADS or PCAD or AD09 open) and schematic, power line carrier technolog