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RS-232⇔RS-485 Converter ULI-226D

DB9 ⇔ DB9 connection! Simple port power supply model

ULI-226D is an industrial converter that converts RS-232 signals to RS-485 and supports power over the port. It uses DB9 connectors on both the RS-232 and RS-485 sides, making it ideal for easy connections in control panels and testing equipment. It does not require an external power supply and supports communication speeds of up to 115.2 kbps and long-distance transmission of up to 1.2 km.

Product page

basic information

- Conversion: RS-232 ⇔ RS-485 (2-wire) - Communication distance: Up to 1.2 km - Data rate: Up to 115.2 kbps - Power supply method: Powered by RS-232 port - RS-232 connector: DB9 female - RS-485 connector: DB9 female - Size / Weight: 60 × 32 × 16 mm, approximately 82 g - Operating temperature: 0 to 70°C - Certification: CE, FCC

Price information

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Delivery Time

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Model number/Brand name

ULI-226D

Applications/Examples of results

- Connection of industrial PCs and RS-485 devices - Serial communication within control panels - RS-232 to RS-485 conversion for testing equipment and lab devices

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Model number overview
ULI-226D(BB-485SD9R) RS-232 DB9F ⇔ RS-485 DB9F, port power supply compatible, simple model.

[Case Studies Included] Serial/USB Communication Devices Product Guide

PRODUCT

Data Sheet: ULI-226 Series

DOCUMENT

Recommended Products for Industrial Sites: Advantech Industrial IoT Systems & Devices Star Product Guide (2025)

CATALOG

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Distributors

In 1983, Advantech (Advantech Co., Ltd.) was founded in Taiwan. For over 40 years, we have been developing high-quality and high-performance computers for industrial applications. As of 2024, we offer a lineup of over 3,000 various IoT devices. As the world's No. 1 manufacturer in the industrial computer market, with a presence in 95 cities across 26 countries, we aim to cultivate a prosperous future by solving social issues through AI × IoT platform services. *Source: OMDIA - No. 1 in global market share for industrial PCs, 42.5% (2023 edition)* In Japan, we established Advantech Co., Ltd. in 1997. In 2018, we formed a capital and business alliance with Omron Nogata Co., Ltd. to further expand sales and to quickly respond to market demands by offering design to production (DMS/ODM) services. By merging Taiwan's speed with the technological expertise we have cultivated over the years, we will establish a brand that meets the needs of our partners.