波士电子：RS-232/RS-485正宗专业厂家
BOSI electronics：RS-232/RS-485 expert English 中文
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The world's smallest RS-232/RS-485/optical-fiber converter!
All products have patent pending: ZL03335086、ZL03335087、ZL03335088 etc
| Model | Function | Power | Price |
|---|---|---|---|
| OPT232-9 | RS-232/optical-fiber converter（multimode、4Km,DB-9/9 sized） | Port Powered | $170 |
| OPT485-9 | RS-485/RS-232/RS-422/optical-fiber converter（multimode、4Km） | 5V DC | $180 |
| OPT232S | RS-232/optical-fiber converter（singlemode、50Km） | Port Powered | $380 |
| OPT485 | RS-485/422/232 optical-fiber converter（multimode、4Km） | all RS-232/RS-485/RS-422 | $150 |
| OPT485S | RS-485/422/232 optical-fiber converter（singlemode、50Km） | $380 | |
| OPT232EX | RS-232/optical-fiber converter & repeater（multimode） | 5V DC | $250 |
| OPT232EXS | RS-232/optical-fiber converter & repeater（singlemode） | 5V DC | $550 |
| OPT485EX | RS-485/optical-fiber converter & repeater（multimode） | 5V DC | $300 |
| OPT485EXS | RS-485/optical-fiber converter & repeater（singlemode） | 5V DC | $600 |
OPT232/485 series_datasheet OPT485-9 series datasheet
multi nodes fiber communication scheme
