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Four Rs232 Rs485 Rs422 Ports Serial Device Servers - China

price: 109.60 Dollar US$

  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 processor, 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 and TCPIP protocol stack.

  -Auto-MDI/MDIX, RJ45 port with 10/100Mbps

  -TCP Server, TCP Client, UDP Client, UDP Server and HTTPD Client work mode

  -Four ports can work independently at the same time

  -Can distinguish which serial port connects to the device via port number

  -Support virtual serial port and provide corresponding software USR-VCOM

  -Serial baud rate from 600bps to 230.4K bps

  -DNS and DHCP supported

  -Provide PC TCP/IP socket programming example such as VB, C++, Delphi, Android and IOS

  -Built-in webpage;also can customize webpage for users

  -The global unique MAC address bought from IEEE (begin with D8-B0-4C);user can define MAC address

  -Support upgrade firmware via network

  -Support keepalive, rapidly detect dead links

  -Support account and password, can be used to page login and network settings

  -Support one channel Websocket, realize bidirectional transparent transmission between webpage and serial 0

  -Support Modbus RTU to Modbus TCP

  -Support UDP broadcast function

  -Four serial ports;each serial can work as rs232, rs485 or rs422;DB9 female;provide rs485/rs422 converter

  -Four channel serial communication indicator: TX/RX

  -Support DC adapter and 5.08-2 terminal power supply

  -Reload button, one key to restore default settings

  -RJ45 with Link/Data indicator light, built-in isolation transformer and 2 KV electromagnetic isolation


Company Contact:


  • Phone: 86-531-88836739

  • Address: Floor 11,Building 1,No.1166 Xinluo Street,Gaoxin Distric, Jinan, Shandong, China

  • Email: Email


Published date: August 16, 2016 -

  • Business Description: Jinan USR IOT Technology Limited has been focusing on IOT and M2M field for more than 6 years. We offer networking products such as serial device server,Ethernet to serial, GPRS DTU and embedded WIFI module.We have professional R&D teams for hardware and software, phone APP and server. And we can provide OEM & ODM service for clients.

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