Four Port Device Server

  • 4 Port Device Server is a protocol converter which transmits the Serial Data sent by Equipment as TCP packets to the LAN/Network and converts back the TCP/IP data received from the LAN/Network as Serial data to the equipment. EAD also supports UDP Protocol for Broadcast applications.
  • EAD-04 is a low cost, Four Serial RS 232 to Ethernet LAN 10/100 Mbps connectivity system using the TCP/IP protocol and is based on ARM Cortex M4 High speed 32 – bit Microprocessor. EAD–04 has built-in web server for configuration through Web browser and a factory default load switch to load the default configuration setting.
  • This also support one RS 485/422 Serial Port for connecting over LAN.

Features & Specifications

Serial Interface
Interface 4 Port RS 232 & 1 Port RS 485/422
Connectors DB9 Male for RS 232, Screw type connector for RS 485/422
Data Rates 300 to 115200 bps
Data Bits 7 or 8
Parity Odd, Even and No parity
Stop Bits 1 or 2
Network Interface
Interface Ethernet 10Base-T or 100Base-TX
Connectors RJ 45 Female
Protocols TCP, UDP, ARP, ICMP, MAC, Telnet, DHCP, HTTP, SNMP & MODBUS (Optional)
Indicators (LED)
Green Power ON
Yellow Connection Status
Green Transmit Data
Red Receive Data
RS 485/422
Maximum No. of nodes 256
Maximum Cable Length 1200 m
Isolation >2500 Vrms
CPU ARM Cortex M4
Memory 1 MB
Input 12 V DC External Adaptor
Operating 0 °C to 55 °C
Storage –4 °C to 66 °C
Dimensions (LxWxH) 251 mm(L) x 136 mm(W) x 28 mm (H) for Box Product
Weight 650 g
Warranty 12 Months for Box Product


  • Access Management in hospitality industry.
  • Attendance reading and access control systems
  • Bar-code readers and printers.
  • Building Automation & Control
  • Card verification kiosks
  • CNC machine control.
  • Industrial Automation.
  • Moving digital display board and Video projector remote management
  • Patient monitoring
  • UPS monitoring, windmill monitoring and control
  • Vending machine monitoring and control

Ordering Informaiton

Model Number Description
EAD-04-104 MB Product Enclosed in Metal Box
Add suffix:-
MDB For MODBUS protocol Support
SNMP For SNMP protocol Support

To Buy
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