... Transmitter 1,High Quality with CE,RoHs,FCC Certificate 2,HighQuality 3.Prompt Delivery 4.RS232, RS422,RS485 Fiber Optical ... the international standards ,being used for different Video Transmitter and Receiver Features: 1.uses the entire digital non-compression technology, ... automation, electricity, customs, water conservatncy, bank and so on 2-CH Digital Fiber Optical Transmitter and Receiver