波士電子：RS-232/RS-485正宗專業廠家   

BOSI was founded in 1993 in Beijing.

BOSI is devoted to develope RS-232/RS-485 products.

2004:The world's smallest RS-232/RS-485/RS-422/Optical Fiber converter(OPT485-9)

2003:The world's smallest RS-232/Optical Fiber converter(OPT232-9)

2003:The world's smallest RS-485 repeater(Y485TA)

2002：The world's smallest RS-232/RS-485/RS-422 converter(Model 485CX) .

2002：The world's first  RS-232/Infra-Red converter with no power supply.

2002：The world's smallest RS-232/RS-422 converter(Model 422AX) .

2002：The world's first RS-232 direct Extender(1000m, EX232).

2001：The world's first half DB-9 socket-sized RS-232/RS-485 converter .

2001：The world's first universal opto-isolation/non-isolation RS-232/RS-485 converter .

2001：The world's first RS-485 opto-isolator with no power supply.

2000：The world's first RS-232 data aquisition system  with no power supply.

2000：The world's first isolated RS-232/RS-485/RS-422 converter with no power supply.

2000：The world's first RS-232/optical-fiber converter with no power supply.

1999：The world's first RS-232/CAN converter with RS-232 protocal.

1999：The world's first RS-485 optical-isolation repeater  with zero-time delay and no setting.

1999：The world's first one RS-232 to two depentent RS-232 extender with no power supply.

1999：The world's first one RS-232 to four RS-485 extended converter with no power supply.

1998：The world's first RS-485 repeater  with zero-time delay and no setting.

1998：The world's first RS-232/RS-485/RS-422 converter with no power supply.（universal half-duplex or full-deplex）

1998The world's first RS-232/RS-485 converter with no power supply.(No need to modify software)

1997：The world's first one RS-232 to four indepent RS-232 extender with no power supply.

1997：The world's first RS-232 data acqisition system with no power supply.