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dS3484 - 4 x 16A Ethernet Relay, DS3484


Right out of the box -
Simple configuration and setup from your web browser.
Control it from a web page, or select tcp/ip control with an option of ASCII, Binary or Modbus protocols. 
Send email notifications on selected events. 
Optional AES encryption for totally secure control using binary tcp/ip mode.
Add simple relay automation, for automatic relay control.
Create Peer to Peer control in a few clicks.
Up to eight 32-bit counters with capture and reset, 20 counts/second on inputs.
Event schedules for timed events daily or weekly.


Still want more?

You can completely customise the module using our powerful dScript language! - or just modify a supplied example.
Create custom webpages - Add your own logo, buttons and functionality.
Add a tcp server to respond to incoming tcp requests with your own functions.
Include a tcp client and send packets of tcp data to other devices using your own protocol.

dScript editor requirements - Windows 7 or later, Linux or macOS.


  • Serial ports - 2 x TTL level serial ports, 1 x RS485 port..
  • Relays - 4 with up to 16Amp @24vdc or 250vac, screw Terminals for N/O N/C and Common contacts
  • I/O - 8 channels, your choice of VFC input or NPN output.
  • Analogue Inputs - 4 channels of 10-bit A/D.
  • Communication - USB for development, RJ45 Ethernet for normal access
  • Power - 12V DC jack 2.1mm (adaptor sold separately)