• es 420 ethernet 1 port rs422 485 power over ethernet poe
  • ES 420 2
  • ES 420 3
  • ES 420 4
es 420 ethernet 1 port rs422 485 power over ethernet poe
  • 1 Port RS-422/485 with Power over Ethernet IEEE802.3af
  • Ethernet to Serial Device Server
  • Data rate from 110 to 1,000,000 baud
  • User friendly interface, simple to use, powerful in operation
  • Serial Port Tunnelling allows serial cable replacement over any distance, no software required
  • Optional DIN rail mounting kit and stand alone power supply
  • ES-420-datasheet (1.09 MB)
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Ethernet to Serial device server with Power over Ethernet providing access to one RS422/485 serial port. Data transfer rates up to 1,000,000 baud, coupled with 1Mbit/s line drivers deliver uncompromising performance.

Power over Ethernet (PoE) uses IEEE 802.3af standard, compatible with any PoE switch.

Our ES range provides simple instant networked serial ports. RS485 - 1 twisted pair - half duplex configuration with autogating provides trouble free data transmission due to automatic control of data direction. A web interface allows secure configuration and control of the serial ports over a local network or the internet using any browser. For Windows our in-house designed (32 bit and 64 bit) driver gives you local COM ports, retaining existing software applications and allowing you to connect across your network to remote devices just as if they were attached locally. Serial Port Tunnelling (individually configurable) allows serial cable replacement over any distance, no software required. You can access the device via TCP/IP sockets from any networked device like an Android tablet, PC or phone. On Windows OS TCP/IP sockets are handled by the Winsock API, this will differ on other OSs.

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Operating Systems

Tech Spec

Serial Port
ConnectorDB9 Connector - 9 Pin Male
Tx FIFO Size256
Rx FIFO Size32
Operating DistanceRS422/485 Standard (4000 ft : 1200 metres)
CableNo Cable; Integrated Connector
Serial Port Settings
Max Baud Rate1,000,000 (1 MegaBaud)
Data Bits5,6,7 or 8
ParityOdd, Even, None, Mark or Space
Stop Bits1 or 2
Tx/Rx ModesFull Duplex, Half Duplex Autogating - Hardware Autogating
Power InputPower Over Ethernet OR 5 - 30V DC input, reverse polarity protected
Power Over EthernetIEEE 802.3af
Power Supply 1 DescriptionOptional Global Power Supply - PW-800
Power Supply 2 Description
Mounting Accessories 1 DescriptionDIN-Rail Mounting Kit - MK-048
Mounting Accessories 2 Description
PCB Layers4
Operating Temperature Range0 °C to +60 °C / 32 °F to +140 °F
Device Dims with ears96.3x101x25
Device Dims without ears91.6x77x25
Power Consumption1.74W
Product Weight0.121 kg, 4.27 ounces
Product Dimensions101x100x27 mm, 4.0x3.9x1.1 inches
Packaged Weight0.234 kg, 8.25 ounces
Packaged Dimensions160x135x49 mm, 6.3x5.3x1.9 inches
GTIN (barcode)837324003734
Operating System Compatibility
Operating Systems
  • Communicate with Device over TCP from any OS
  • Microsoft Windows 10
  • Microsoft Windows 8 32 bit & 64 bit Editions
  • Windows Server 2012
  • Microsoft Windows 7 32 bit & 64 bit Editions
  • Windows Server 2008 32 bit & 64 bit Editions
  • Windows Vista 32 bit & 64 bit Editions
  • Windows XP 32 bit & 64 bit Editions
  • Microsoft Windows 2000
Power over EthernetPower over Ethernet


Microsoft Signed Drivers

Microsoft Hardware