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USR-N540 4 Ports Serial R... has been added to your Cart

USR-N540 4 Ports Serial RS232 / RS485 / RS422 to RJ45 Ethernet Converter

4.0 out of 5 stars 9 ratings

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Brand USR
Number of ports 4
Input voltage 12 Volts

About this item

  • USR-N540, Four serial ports device server,RS232 / RS485 / RS422 interface,TI cortex-M4 solution, ARM processor and TCP/IP protocol stack,DNS, DHCP, Websocket and HTTPD Client supported
  • Built-in webpage, support customized,Reload button,one key to restore factory defaults,Multiple indicator LEDs for easy debugging,Keepalive function,rapidly detect dead links
  • Can upgrade firmware via network easily,Account and password to page login and network settings,Support UDP broadcast,send and receive data from all IP in LAN
  • Global unique MAC address bought from IEEE, can be defined,Virtual serial port, setup and test software is availiable
  • Provide PC TCP/IP SOCKET programming example: VB, C++, Delphi, Android, IOS

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8.99 x 8.41 x 2.49 cm; 4.54 Grams
  • Date First Available ‏ : ‎ 8 April 2018
  • Manufacturer ‏ : ‎ USR
  • ASIN ‏ : ‎ B07KWYC1W9
  • Item Model Number ‏ : ‎ USR-TCP232-302
  • Customer Reviews:
    4.0 out of 5 stars 9 ratings

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Product description

USR-N540, a four serial device server, can realize transparent transmission between TCP/UDP data package and RS232/RS485/RS422 interface. it is based on ARM processor,low power, rapid speed and high stability. And N540 is internally integrated with TCP/IP protocol. User can easily realize embedded device networking.
RJ45 -
Port: 1
Standard: 4 pin RJ45
Speed rate: 10/100Mbps, MDI/MDIX
Protection: 2KV electromagnetic isolation
Protocal: IP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP, Websocket, HTTPD Client
Buffer: TX: 16K byte, RX: 16K bytes
COM Port --
Port: RS232 / RS485 / RS485 x 4, can work at the same time
Standard: RS232: DB9 male connector, RS485: A+ B-, RS422: (A, B, Y, Z)
Baud rate: 600-230.4K bps
Data bit: 5, 6, 7, 8
Parity bit: None, Odd, Even, Space, Mark
Stop bit: 1, 2
Buffer: TX: 2K byte, RT: 2K byte
Flow control: RTS/CTS
RS485 resistor: 2.2K Ω
Protection: ESD 2KV, lighting, surge, over current
Power Input --
Voltage: 5-36 V
Type: DC jacker and + - terminal
Working current: 53mA (average) 12 V
Protection: ESD, lighting
Working Environment --
Working tempreture: -40 - 85 °C
Storage tempreture: -40 - 105 °C
Storage humidity: 5% - 95% (no condensation)
Dimensions: 222x122x29 mm, without terminal
Certification: CE, FCC, ROHS, WEEE
Packing List
Serial Device Server x 1
RS232 to RS485/RS422 converter x 4
Power adapter x 1
Serial cable x 1

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4.0 out of 5 stars
4 out of 5
9 global ratings

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Top reviews from other countries

Volker Raum
4.0 out of 5 stars Gut mit leichten Ecken und Kanten
Reviewed in Germany on 1 April 2020
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One person found this helpful
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5.0 out of 5 stars Va de lujo
Reviewed in Spain on 27 April 2020
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Rajesh Tripathi
2.0 out of 5 stars The product works fine but software is buggy
Reviewed in the United States on 14 December 2019
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Nicole Carlson
5.0 out of 5 stars Good product.
Reviewed in the United States on 1 October 2019
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Randy Smith
5.0 out of 5 stars Great device, takes some time to learn software
Reviewed in the United States on 8 January 2020
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