Introduction
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.

Feature 
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 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

Application Field
Industrial Data Transmission, Industrial Automation
Security And Protection Monitoring, Public Security
Smart Home, Power Control, Environmental Monitoring, Intelligent Agriculture
Door Check On Work Attendance System, POS System, Rice Selling System
Building Automation System, Power Monitoring, Self-Service Banking System, Telecom Machine Room Monitoring