2-Port Serial RS232 to Ethernet Network Device Server ezTCP CSE-H20

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  • Regular price $110.62
  • Will be in stock after

The ezTCP CSE-H20 is a 2 port RS232 to Ethernet converter that handles TCP/IP data automatically. This RS232 to Ethernet converter enables your serial devices to get networking capabilities, and eliminates the distance limitation of serial communication.

The CSE-H20's serial ports are interfaced with RJ45 connectors and support serial communication at speed up to 230,400bps. This RS232 to Ethernet converter comes preloaded with various communication functions (DNS, DDNS, Telnet COM Port, etc.) and strong security functions (SSL, MAC/IP filtering, etc.).

The CSE-H20 RS232 to Ethernet Network Device Server can be used in diverse applications such as Advertisement and Signage Systems, Remote Weather Monitoring Systems, and Control PLC over Internet.


  • Compact size (87mm x 57mm x 24mm)
  • RJ45 type of serial port
  • SSL (Secure Sockets Layer)
  • Separator settings for packet fragmentation
  • Virtual COM port (ezVSP) provided
  • Serial tunneling


    • Serial Physical Interface
      • Serial Interface: 2x RS232
      • ±15KV ESD Protection
      • Connector: 2X RJ45 Connector
    • Serial Port Properties
      • Baudrate: 300bps ~ 230,400bps
      • Data Bits: 5, 6, 7, 8 bits
      • Parity: None, Even, Odd, Mark, Space
      • Stop Bit: 1, 1.5, 2
      • Flow Control: RTS/CTS (Hardware)
    • Network Interface
      • 10Base-T/100Base-TX Ethernet (RJ45)
      • Ethernet Speed Auto Sense
      • 1:1 or Cross-over Cable Auto Sense
      • 1000 VAC Isolation
    • Software Functions
      • Protocols
        • TCP, UDP, IP ICMP, ARP, Ethernet, TELNET
          TFTP, DHCP, PPPoE, DNS, DDNS
          Telnet COM Port Control Option (RFC 2217)
      • Security
        • SSL (Secure Socket Layer)
        • SSH (Secure Shell)
        • IP & MAC filtering - Restrict host or network
        • Password for Configuring
      • Communication Mode
        • TCP Server (T2S)
        • TCP Client (COD)
        • TCP Server/Client with AT Command (ATC) - Patent
        • UDP Mode (U2S)
      • Additional Functions
        • Remote Debug Function
        • Sending MAC address Option
    • Indicators (LEDs)
      • Power: Red
      • Status: Yellow
      • Ethernet Link: Green
      • Ethernet RXD: Yellow
      • Ethernet TXD: Green
      • COM RXD, COM TXD: Serial Port Status
    • Management:
      • ezManager: Configuration and Monitoring through Network and Serial
      • TELNET: TELNET Login
      • AT Command: Configuring in ATC Mode - Patent
    • Supplementary Software
      • ezManager: Configuration Tool for Windows through Network and serial
      • ezVSP: Serial to Network Virtual Driver for Windows
      • ezTerm: Simple TCP/IP Communication Test Tool
    • Dimensions
      • Size 87mm x 57mm x 24mm
    • Operating Environments
      • Input Voltage: DC 5±0.5V
      • Current Consumption: 200mA Typical
      • Operating Temperature: 0℃ ~ +55℃
      • Storage Temperature: -40℃ ~ +85℃
    • Certifications
      • KC: Registration(KN 22, KN 24)
      • CE: EMC 2014/30/EU, RoHS 2011/65/EU
      • FCC: FCC Part 15 Subpart B, Class A

 Package includes:

1X CSE-H20 RS232 to Ethernet Network Device Server

Documentation & Resources:


ezTCP Serial Networking Introductory video