Isolated (3000V) RS-485/422 repeater or RS-232 to RS485/422 converter. It can use one function at the same time. The product must have 12-36VDC power input, optic-electrical isolation more than 3KV. Have small volume, 3000m transfer distance, high rate, steadily performance and so on. It is abroad used in industry control system, It is a best performance and price interface converter and Repeater.Features:Support DIN-rail, Terminal block connecti..