Serial Connectivity Series | Switch & Router | Ethernet Network Product Manufacturer | CTC Union

Ethernet Device Server | CTC Union's goal is to provide reliable, temperature resistant and rugged designs for harsh environments. We offer a full spectrum of products, including L3/L2 Switch, PoE Products, EN50155 and E-Mark certified switches.

Ethernet Device Server

Serial Connectivity Series

The STE Series are 1/4/8-port Ethernet Device Servers that allows hosts to control RS-232 asynchronous or 2/4 wire RS-485 asynchronous serial devices located virtually anywhere through a TCP/IP or UDP/IP connection. The STE Series provide DB9 port connection on one side and a 10/100 Mbps Ethernet connection on the other side.


Ethernet Device Servers connect serial devices such as PLC, alarm sensors and PTZ camera control to IP networks. Applications include industrial/factory automation, public safety and surveillance systems.

Serial Connectivity Series

  • Display:
Result 1 - 3 of 3
2 ports Serial to Ethernet Wireless Device Server - STE211 Series Serial Device Server
2 ports Serial to Ethernet Wireless Device Server
STE211W, STE211

The serial to Ethernet wireless device server (STE211W) and serial to Ethernet device server...

Details Add to List
4 × RS232/422/485 to IP Device Server - STE400A-485/232 IP Device Server
4 × RS232/422/485 to IP Device Server
STE400A-485, STE400A-232

The STE400A are 4-port RS232/422/485 to IP Device Servers that enable the ability to control...

Details Add to List
8-Port RS232 to IP Device Server - STE800A-232 IP Device Server
8-Port RS232 to IP Device Server
STE800A-232

The STE800A-232 is 8-port RS232 to IP Device Servers that enable the ability to control asynchronous...

Details Add to List
Result 1 - 3 of 3

Serial Connectivity Series | Switch & Router | Ethernet Network Product Manufacturer | CTC Union

Based in Taiwan since 1993, CTC Union Technologies Co., Ltd. has been a manufacturer of networking products and a provider of industrial networking solutions. Its main networking products include, Serial Connectivity Series, network switches, fiber optic cables, network routers, media converters, bypass switches, fiber optic multiplexers, fiber single mode media converters. Industrial networking solutions for optical transport, factory automation, intersection monitoring, wireless network security, traffic monitoring, tunnel and cell tower safety control, wireless machine networking, data offloading, PoE-powered office automation, campus network access.

CTC Union, founded in 1993, is a Taiwan manufacturer of telecommunication products (ex. L2 Ethernet switch, TDM, Transponder) and industrial Ethernet switch, converter, injector. Strictly control all product design, CTC Union’s products pass strict tests and certifications ex. CE, FCC, UL, IEC 62443-4-1, EN50155, EN45545-2, IEC61850-3 standard etc. CTC Union partners with voice and data carriers, enterprises, and industrial grade Ethernet users covers all continents and areas. This global partnership receives direct engineering and technical support from headquarters, located in Taipei, Taiwan.

CTC Union has been providing customers with high quality networking products and networking solutions since 1993, with both advanced technology and 28 years of experience, CTC Union ensures that each customer's requirements are met.