• es 842 ethernet 8 port rs422 485
  • ES 842 RS 422 485 Pinout
  • ES 842 back
  • ES 842 case pcb dimensions 1
  • ES 842 case pcb dimensions 2
  • ES 842 front
es 842 ethernet 8 port rs422 485
  • 8 Port RS-422/485
  • Ethernet to Serial Device Server in steel IP-30 enclosure
  • Data rate from 110 to 921,600 baud
  • Serial Port Tunnelling allows serial cable replacement over any distance, no software required
  • Install Virtual Com ports, communicate over TCP/IP or use the Software APIs for Visual Basic, C# and more
  • Power supply included (power input 5-30V DC)
  • ES-842-datasheet (0.51 MB)
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Ethernet to Serial device server providing access to eight RS422/485 serial ports. Data transfer rates up to 1,000,000 baud, coupled with 1Mbit/s line drivers deliver uncompromising performance. 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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Tech Spec

Serial Port
ConnectorDB9 Connector - 9 Pin Male
Tx FIFO Size4096
Rx FIFO Size2048
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, 1.5 or 2
Tx/Rx ModesFull Duplex, Half Duplex Autogating
Power Input5 - 30V DC input, reverse polarity protected
Power Over EthernetNo - this product does not have PoE capability
Power Supply 1 DescriptionGlobal Power Supply - PW-500
Power Supply 2 Description
Mounting Accessories 1 DescriptionSnap In DIN Clip lit for 4&8 ports - MK-070
Mounting Accessories 2 DescriptionWall Mounting Kit for 4&8 ports - MK-059
PCB Layers4
Operating Temperature Range-30 °C to +80 °C / -22 °F to +176 °F
Device Dims with ears96.3x101x25
Device Dims without ears91.6x77x25
Power Consumption2.86W Typical
Product Weight0.870 kg, 30.69 ounces
Product Dimensions215x123x56 mm, 8.5x4.8x2.2 inches
Packaged Weight1.167 kg, 41.16 ounces
Packaged Dimensions300x135x80 mm, 11.8x5.3x3.1 inches
GTIN (barcode)837324002690
Operating System Compatibility
Operating Systems
  • Microsoft Windows 10
  • 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
EthernetEthernet Interface takes advantage of a companies pre-existing infrastructure, allowing you to connect to your Brainboxes device over the local network, or from across the world.


Microsoft Signed Drivers

Microsoft Hardware