... Fiber Optical Transmitter 1,High Quality with CE,RoHs,FCC Certificate 2,HighQuality 3.Prompt Delivery 4.RS232, RS422,RS485 Fiber Optical ... country.All the optical interfaces and electrical interfaces meet the international standards ,being used for different Video Transmitter and Receiver Features: 1 ... conservatncy, bank and so on 2-CH Digital Fiber Optical Transmitter and Receiver