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Product Classification
Data download
Serial to Ethernet/WiFi Serial to Ethernet converters connect devices with an RS232, RS422, or RS485 serial interface to a local area network to transmit serial data over Ethernet. With a physical wired Ethernet network connection on one side, and one or more serial ports on the
Serial to Ethernet(MQTT/SSL)
Serial to Ethernet(Cost-effective)
Serial to WiFi
serial to ethernet(classic version)
Serial to Ethernet(MQTT/SSL)
USR-N580 8*RS485 Ports Serial Ethernet Converter
● Secure Client work mode: TCPS, HTTPS, MQTTS
● SSL/TLS Encryption in TCP client, HTTP Client and MQTT modes
● MQTT protocol for AWS/OneNET/ Alibaba IoT Platform
● High Reliability and Stability:EFT-IEC61000-4-4 Level 3(±2KV),Built-in hardware watchdog,ESD-IEC61000-4-2 Level 4
● Redundant Power Supply
● Support TCP server/client, UDP server/client, https client, Virtual COM
● 8-port 485 Modbus Gateway (3-in-1 serial port RS232/RS485/RS422 Optional)
● Wide voltage input range DC 5-36V
● Flow control XON/XOFF
● Configuration via Web Server page, AT commands, and Windows Utility
● 2 Ethernet ports,switch function, cascade connection
USR-N510 1*RS485 Ports Serial Ethernet Converter
● Secure Client work mode: TCPS, HTTPS, MQTTS
● SSL/TLS Encryption in TCP client, HTTP Client and MQTT modes
● MQTT protocol for AWS/OneNET/ Alibaba IoT Platform

● High Reliability and Stability:EFT-IEC61000-4-4 Level 3(±2KV),Built-in hardware watchdog,ESD-IEC61000-4-2 Level 4 
● Redundant Power Supply
● Support TCP server/client, UDP server/client, https client, Virtual COM
● 1-port 485 Modbus Gateway (3-in-1 serial port RS232/RS485/RS422 Optional)
● Wide voltage input range DC 5-36V
● Flow control XON/XOFF
● Configuration via Web Server page, AT commands, and Windows Utility
USR-N520 2*RS485 Ports Serial Ethernet Converter
● Secure Client work mode: TCPS, HTTPS, MQTTS
● SSL/TLS Encryption in TCP client, HTTP Client and MQTT modes
● MQTT protocol for AWS/OneNET/ Alibaba IoT Platform

● High Reliability and Stability:EFT-IEC61000-4-4 Level 3(±2KV),Built-in hardware watchdog,ESD-IEC61000-4-2 Level 4 
● Redundant Power Supply
● Support TCP server/client, UDP server/client, https client, Virtual COM
● 2-port 485 Modbus Gateway (3-in-1 serial port RS232/RS485/RS422 Optional)
● Wide voltage input range DC 5-36V
● Flow control XON/XOFF
● Configuration via Web Server page, AT commands, and Windows Utility
USR-N540 4*RS485 Ports Serial Ethernet Converter
● Secure Client work mode: TCPS, HTTPS, MQTTS
● SSL/TLS Encryption in TCP client, HTTP Client and MQTT modes
● MQTT protocol for AWS/OneNET/ Alibaba IoT Platform

● High Reliability and Stability:EFT-IEC61000-4-4 Level 3(±2KV),Built-in hardware watchdog,ESD-IEC61000-4-2 Level 4 
● Redundant Power Supply
● Support TCP server/client, UDP server/client, https client, Virtual COM
● 4-port 485 Modbus Gateway (3-in-1 serial port RS232/RS485/RS422 Optional)
● Wide voltage input range DC 5-36V
● Flow control XON/XOFF
● Configuration via Web Server page, AT commands, and Windows Utility
Serial to Ethernet(Cost-effective)
USR-TCP232-302 1-port RS232 to Ethernet Converters
● Single RS232 to ethernet converters(transmission between rs232 and Ethernet)
● Cost effective serial port to Ethernet
● Transmission between RS232 port and Ethernet
● Power supply: DC 4.75-7V
● Compact, Small size, Light Weight
● Supports TCP server/client, UDP server/client
● Virtual COM
USR-TCP232-304 1-port RS485 to Ethernet Converters
● Single RS485 to ethernet converters(transmission between rs232 and Ethernet)
● Cost effective serial port to Ethernet
● Transmission between RS232 port and Ethernet
● Power supply: DC 4.75-7V
● Compact, Small size, Light Weight
● Supports TCP server/client, UDP server/client
● Virtual COM
USR-TCP232-306 1-port RS485/232/422 to Ethernet
●  RS232/485/422 Ports choose one of three
● Cost effective serial port to Ethernet
● Transmission between RS232/485/422 port and Ethernet
● Power supply: DC 4.75-7V
● Compact, Small size, Light Weight
● Supports TCP server/client, UDP server/client
● Virtual COM
Serial to WiFi
USR-W610 1 LAN Port Serial to WiFi Converter
● 802.11 b/g/n WiFi serial device server
● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling
● Supports TCP server/client, UDP server/client, HTTPD client
● Hardware WatchDog, 24 hours stable operation.
● 1-port RS232 or RS485 to wifi 
● Serial to WiFi / WiFi to Ethernet converters
USR-W630 2 LAN Port Serial to WiFi Converter
● 802.11 b/g/n WiFi serial device server
● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling
● Supports TCP server/client, UDP server/client, HTTPD client
● Hardware WatchDog, 24 hours stable operation.
● 1-port RS-232 or RS485 to wifi 
● Serial to WiFi / WiFi to Ethernet converters

serial to ethernet(classic version)
USR-TCP232-410S RS232 and RS485 to Etherent Converter

● Serial Port: RS232 and RS485, can be used simultaneously
● Redundant Power supply: DC 5-36V or Terminal power supply
● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling
● Work mode: TCP Server/Client, UDP Server/Client, HTTPD Client
● Flow control XON/XOFF
● Serial to Web, 2 sockets
● Configuration by Webpage, AT command and Setup software



USR-N520 2 Ports Serial to Etherent Converter

● Serial Port: 2xports of RS232/RS485/RS422,can be used simultaneously

● Redundant Power supply: DC 5-36V or Terminal power supply

● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling

● Work mode: TCP Server/Client, UDP Server/Client, HTTPD Client

● Flow control XON/XOFF

● Serial to Web, 2 sockets

● Configuration by Webpage, AT command and Setup software


USR-N540 4 Ports Serial to Etherent Converter

● Serial Port: 4x ports of RS232/RS485/RS422,can be used simultaneously

● Redundant Power supply: DC 5-36V or Terminal power supply

● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling

● Work mode: TCP Server/Client, UDP Server/Client, HTTPD Client

● Flow control XON/XOFF

● Serial to Web, 2 sockets

● Configuration by Webpage, AT command and Setup software


USR-N510 1 Port Serial to Etherent Converter

● Serial Port: RS232/RS485/RS422,3-in-1 Serial ports

● Redundant Power supply: DC 5-36V or Terminal power supply

● Modbus Gateway: Modbus RTU to Modbus TCP, Modbus Polling

● Work mode: TCP Server/Client, UDP Server/Client, HTTPD Client

● Flow control XON/XOFF

● Serial to Web, 2 sockets

● Configuration by Webpage, AT command and Setup software

USR-N668 8-port RS232/422/485 Serial Device Servers
● Rack mounted, space saving
● Support 8 software selectable RS-232, RS-485/422 RJ45 serial port 
● Support linux OS
● Power supply accepts wide voltage input range AC 85-265V
● 2 Ethernet ports,switch function, cascade connection 
● SSL/TLS Encryption
● Configuration via Web Server page, AT commands, and Windows Utility
Product Commonality
Protection Of Industry
Adopts industrial design, 7*24 hours high load all weather reliable work, to meet the outdoor poor working environment needs.
Support level 4 ESD (static), level 3 surge (surge), level 3 EFT (electrical fast transient), internal process watchdog, and external hardware watchdog to ensure proper operation of equipment and free from interference from external environment.
Serial Data Transmission
The serial port equipment in the field of industrial automation is transformed into the communication mode of Ethernet network to realize the two-way transparent transmission between RS232/485/422 and Ethernet data, and complete the function of remote reading serial port data. Without any processing data, equivalent to a serial cable.
Modbus Transmission
Modbus protocol adopts the mode of master station query slave station. The physical interface can be RS232, RS485, RS422, Rj45, and can also transmit data on various media.
The Modbus polling mechanism can effectively solve the problem of sticky congestion caused by data concurrency.
Multiple Host Access
In the question-and-answer query mode, the network port allows colleagues of multiple hosts to access the same serial port device.
In the host mode, one serial port can be used to communicate with several slave devices at the same time, which is convenient and efficient. However, in slave mode, one communication port can communicate with only one host communication port.
Technical Support
If you need a technical consultation (by phone or email) to help you choose the best Serial to Ethernet for your application, USR IOT is easy to reach and has technical engineers you can talk to.PUSR IOT will wholeheartedly provide you with technical support.
Quality Assurance
For 10 years of advance, we have always been remaining true to the concept of reliability and stability in building our quality strength. Our products have passed the certification of the ISO9001 quality management system. With nearly 100 patents and software copyrights, we have won many certificates from authoritative bodies, such as the Ministry of Industry and Information Technology, CCC, CE, FCC, RoHS, KCC, WEEE, TELEC.
Solutions & Applications
Production Line Data Collection Some large manufacturing industries need to collect data on production lines. By using a serial to Ethernet converter, the work efficiency can be greatly improved.
Traffic Signal Communication – Intelligent Transportation Traffic signaling control systems plays an important role in maintaining traffic order. From the central command center, operators can access traffic signals at remote traffic control locations for real-time monitoring and emergency response. It can ensure smooth traffic by guiding traffic flow, people move flow reasonably.
Don't hesitate to contact PUSR.
Reliable products and services around you!
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Email : inquiry@usriot.com
Tel : +86-531-88826739
Fax : +86-531-88826739-808
Address : Floor 12 and 13, CEIBS
of Maolingshan, Lixia District, Jinan,
Shandong, China
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