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USR-K7 Serial UART TTL to Ethernet Module

  • $39.00
  • Save $10
  • (Exc. GST)

  • Available in stock

  • $ We Ship from our stock in AU (Perth) with pickup option, and Prices are Exc. GST
  • $ We Offer Quantity Discounts for Large Orders 10+ qty (Request for Quote)
  • $ We Accept Purchase Orders & Net 30 Payment for Eligible Accounts

    USR-K7 Serial UART TTL to Ethernet Module

    • TTL UART to Ethernet module
    • Supports TCP server/client, UDP server/client, HTTPS client, Virtual COM
    • Supports Modbus RTU to Modbus TCP
    • Supports flow control CTS/RTS, XON/XOFF
    • Supports 10/100Base-T(X) self-adaptive Ethernet interface
    • Configuration via Web Server page, AT commands, and Windows Utility
    • Hardware watchdog; TI Cortex M4 Solution; MQTT/SSL special firmware (contact sales)








    Work Voltage

    DC 3.0~3.6 V,(3.3V best choice)

    Work Current



    RJ45、10/100Mbps; Auto switch between cross and direct connection

    Package type

    Pin-in package

    Baud Rate












    Network Protocol

    IP、TCP、UDP、DHCP、DNS、https、ARP、ICMP、Web socket


    Static IP or DHCP




    Setup software, Web-page configuration, AT command

    Work Modem

    TCP Server/TCP Client/UDP Server/UDP Client


    Modbus Gateway: Modbus RTU to TCP, Modbus Polling

    Web to Serial

    Web socket: Web to serial

    httpsd Client


    Class RFC2217


    Customized Webpage


    Web Cache


    Serial Port Cache


    Average latency

    On Lan , the time<10ms


    Setup Software, Virtual COM software










    1.5KV Electromagnetic isolation


    35.0x19.39x18.25 mm(L*W*H)

    Work Temp


    Storage Temp


    Work Humidity

    5%~95% RH

    Storage Humidity

    5%~95% RH



    Super Port UART Ethernet Module USR-K7USR-K7 can realize bi-directional data transmission from serial UART to Ethernet.

    With IT scheme and Cortex-M4 processor

    Industrial Ethernet to UART Modules

    With IT scheme and Cortex-M4 processor, signal processing is more efficient and reliable.Equipped with optimized TCP/IPI protocol stack.
    Ethernet Module USR-K7 can quickly realizes bi-directional data transmission stable and reliable.
    The modules has been tested for a long time at - 40 - 85 C and 7* 24 hours stability pressure test.

    Product details of USR-K7

    Product details

    Supports five working modes of TCP Client, TCP Server, UDP Client, UDP Server and httpsd Client.

    Multiple Working Modes are Optional

    Ethernet to Serial Module USR-K7 supports five working modes of TCP Client, TCP Server, UDP Client, UDP Server and httpsd Client. The data transmission can be realized with simple configuration.

    USR-K7 supports working modes of UDP Client, UDP Server. https Client mode of usr-k7


    UDP Client is a connectionless transport protocol in which USR-K7 can only communicate with the target port of the target IP.

    In UDP Server mode, the data received by serial port is automatically sent to the network target of the last communication.

    USR-K7 Supports httpsd Client Mode

    Data Submitted Directly to Web Server

    Supports the data interaction between the terminal device and the webserver directly. Without considering the conversion process, the data request from the serial port to the https server can be realized quickly by simply setting parameters.

    USR-K7 supports Virtual COM


    Virtual COM

    Solves the problem that PC software as serial port can not communicate with networked devices

    Disconnection identification, automatic connection

    Easy identification of dead links and auto re-connection to prevent data loss due to power outages and disconnections

    USR-K7 supports modbus gateway, custom build-in web page, web to serialapplications of USR-K7
    Modbus Gateway

    Polling mechanism can effectively solve the problem of congestion caused by data concurrency (firmware 3009 or higher)

    Custom built-in web page, Function of Web to Serial

    Design built-in web pages according to project requirements, realize web page control, web page data acquisition.

    application of USR-K7: Networked Monitoring of Medical Machinery

    Networked Monitoring of Medical Machinery

    USR-K7 can realize the data transmission between serial port and network quickly thus reducing the manpower on duty.
    At the same time, multiple medical devices can be combined into a local network to realize real-time information.

    application of USR-K7: Industrial Automation Network Monitoring

    Industrial Automation Network Monitoring

    Many traditional serial port devices do not have networking capability. USR-K7 module integrated TCP/IP protocol stack can provide the solution of network communication between the serial device to server via network based on socket to improve the level of industrial automation.

    application of USR-K7: Networked monitoring of medical devices

    Networked Monitoring of Medical Devices

    The power data of the distribution box needs to be collected and reported in real time.
    Tiny size Ethernet to serial module USR-K7 is an industrial-grade design that can provide reliable and stable networking functions and suitable for the integrated project requirements of power monitoring.


    • Documents
    FCC Certificates for serial to Ethernet Modules 2019
    CE Certificates for serial to Ethernet Modules
    • Utilities
    USR-TCP232-M4&E45 Setup V2.1.2.220
    • Development Files



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