What are those? WBR Dmitry. Vasile Surducan wrote: > > You need almost nothing: > two MOC5007or H11L1 to separe tx and rx line. > two voltage doublers if you try a supply from tx line > Vasile -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics