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Jinan USR IOT Technology Limited

China Manufacturer with main products: WiFi Module, Ethernet Module, GPRS DTU, Serial Device Server, WiFi Serial Server, GPRS Module

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4 Serial Port RS232/RS485/RS422 to Ethernet Converter

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Quick Details

  • Model Number: USR-N540
  • Brand Name: USR



This is a serial RS232/RS485/RS422 to Ethernet server, used for data transparent transmission.USR-N540,a four serial device server,can realize transparent transmission between TCP/UDP data package and RS232/RS485/RS422 interface.USR-N540,based on ARM procesor,is of low power,rapid speed and high stability.And N540 is internally integrated with TCP/IP protocol.User can easily realize embedded device networking.


Cortex-M4 kernel, industrial working temperature range(-40~85°C), elaborate optimization TCPIP protocol stack, stable and reliable.
selectable RS232/RS485/RS422 port, Different port can be used together, work independently, distinguish the connected serial port via port number.
Auto-MIDX function, discretionarily connect cross-over or direct network cable, automatic switching.
Support TCP Server, TCP Client, UDP, UDP Server, HTTPD Client,websocket, various of ethernet protocols.
Support virtual serial port, provide corresponding software.
Serial port highest baud rate from 600bps ~ 230.4Kbps.
wide voltage input, more applications.
Support DHCP, automatically access IP, can inquire the facility within network through the setup software.
Supply the protocol for VIP customers
Provide PC TCP/IP SOCKET programming example, VB, C++, Delphi, Android, IOS.
A built-in web page, also parameter setting via web, can customize web pages for users.
Can also set via UDP broadcast, provide the set up protocol.
Reload button, a key restore default Settings.
RJ45 status indicator light, RJ45 interface built-in isolation transformer, 2 KV isolation.
The global unique MAC address bought from IEEE, the user can define MAC address (please state when you make order).
Support upgrade firmware via network.
Support remote IP and domain name at the same time
Support up to 8 link from client when act as TCP Server, same data will be send to all client.
Can modify http server port from default port 80 for module built-in http server.
Support Keepalive, detect a dead link quickly and make sure the connection more stable.


Input Voltage : DC 5 ~ 24V
Working Current : 53mA(43.7~45.1)@ 12V
Certificate : CE, FCC, ROHS
Size : 222 x 122 x 29 mm
Operating Temp. : -40 ~ 85°C (industry)
Storage Temp. : -45 ~ 105°C, 5 ~ 95% RH(no condensation)
Interface : Each port supports RS-232,RS-485 and RS-422;can work at the same time
Network Protocol : IP, TCP, UDP, DHCP, DNS, HTTP, ARP,ICMP, Web socket, Httpd client 

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