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USB to Single Port RS-232 3.3V and 5V TTL Converter
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Port Powered RS-232 to 5V TTL converter
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USB to 4 Serial Port Converter RS-232
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PROFIBUS / Modbus gateway, 80MHz CPU, RS-232/RS-422/RS-485
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USB to RS232 Converter
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RS-232 to RS-422/485 Converter with RS-485 Automatic Data Direction Control,Isolation Protection 3kV on RS-232
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Port Powered RS-232 to 3.3V TTL converter
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Wi-Fi(802.11b/g) to Serial Port Converter, RS232, RS422, RS485, WWW panel
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Serial server, 2x RS232/RS422/RS485, virtual COM, Ethernet, TB, DB9, isolation
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USB to RS232/422/485 Converter, Windows 8/8.1 support, RS-485 Automatic Data Direction Control
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Low Cost USB to RS-232 Converter, maximum speed: 115.2Kbps
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Bluetooth RS232 Serial Adapter, External Dipole Antenna, mini USB, Bluetooth EDR Class 1 (100m), converter