Serial Connectivity Solutions

Advantech Serial Connectivity Solutions feature a broad selection of RS-232, RS-422, and RS-485 serial connectivity devices. These serial devices allow the designer to communicate effectively with a wide range of converters, repeaters, surge protectors, isolators, extenders, switches, combiners / splitters, and modems. Typical applications include industrial automation, medical, healthcare, and security.

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Industrial Automation
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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
Advantech Signal Conditioners & Signal Converters ULI-224TCI 3-Way Iso. RS-232 to RS-422/4
Datasheet
79In Stock
$237.32
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-227D3 RS-232 to TTL 3.3 V CNVTR Port
Datasheet
249In Stock
$72.01
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-223D RS-422 Converter, Port Powered,
Datasheet
261In Stock
900On Order
$89.41
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-224TC Ind. RS-232 to RS-422/485 CNVT
Datasheet
265In Stock
$179.03
Min.: 1
Mult.: 1
Advantech Interface Modules ULI-226D RS-485 Converter, Port Powered,
Datasheet
295In Stock
$89.02
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-321D USB to 1 x RS-232 DB9M CNV
Datasheet
25In Stock
$83.01
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-321DK USB to 1 x Lck RS-232 DB9M CNV
Datasheet
30In Stock
$83.01
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-223T RS-422 Converter, Port Powered,
Datasheet
67In Stock
$89.02
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-234TCL RS-485 Isoaltor
Datasheet
24In Stock
4On Order
$181.03
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-226T RS-485 Converter, Port Powered,
Datasheet
108In Stock
200Expected 2026/11/25
$89.02
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-224TCL RS-232 to Iso. RS-422/485 CNV
Datasheet
102In Stock
$143.03
Min.: 1
Mult.: 1
Advantech Interface Modules ULI-262D RS-232 Modem Data Splitter, DB9
Datasheet
72In Stock
100Expected 2026/10/01
$77.01
Min.: 1
Mult.: 1
Advantech Signal Conditioners & Signal Converters ULI-234TC Ind. RS-422/485 Repeater / Iso
Datasheet
58In Stock
175On Order
$237.04
Min.: 1
Mult.: 1