Industrial 4-port RS232/422/485 to 2-port 10/100TX Device Server (-35°C ~ 75°C)



The STE-604C is an innovative 4 port RS232/422/485 to 2 port LAN (TCP/IP) redundant device server. To assure the agility and security of critical data, the STE-604C offers many powerful features for HW & SW redundant functions. When the connection between the master-link and LAN fails, the STE-604C can automatically switch to another LAN port within 10ms and still guarantee a non-stop connection. The STE-604C also supports switch mode. Users can Daisy Chain to reduce the usage of Ethernet switch ports. Secondly, the STE-604C can simultaneously transfer data into 5 host PCs. This feature can assure all critical data is saved in different host PCs to avoid Ethernet break or host PC failure. Thirdly, the STE-604C provides dual redundant power inputs on the DC power jack and terminal block. The unit provides a NAT pass through function so that users are able to manage their STE-604C inside or outside the NAT router. It is also easy for different IP domain users to use the STE-604C. The STE-604C is one of the best communication redundant solutions for any serial RS232, RS422 or RS485 device application.


  • Redundant Dual Ethernet Ports: Recovery Time < 10ms
  • Switch Mode Support: Daisy Chain to Reduce Usage of Switch Ports
  • NAT-Pass Through: Users Can Manage Through NAT Router
  • Redundant Power Inputs: 12 ~ 48VDC on Terminal Block
  • Redundant Multiple Host Devices:
  • 5 Simultaneous in Virtual COM, TCP Server, TCP Client Mode, UDP
  • Secured Management by HTTPS and SSH
  • Event Warning by Syslog, Email, SNMP Trap, and Beeper
  • 5-Year Warranty