1 Single Relay 30Amp, 2-ch Isolated Digital Inputs, USB Controlled Module

  • 1 Single SPST Relay 30Amp
  • 2-ch Isolated Digital Input
  • Optional Non Isolated inputs, Dry contact or Event counter inputs.
  • Wide software support
  • Tiny footprint
  • Din-Rail mountable


The IA-2121-U is a USB Power Relay Controller that includes two Isolated Digital Inputs and that is being powered and controlled by its USB port. The IA-2121-U Relay Contact Rating is 30 Amps at 240VAC and 20 Amps at 28VDC. The expected device life time at this extreme operation condition is 100x103 cycles. The IA-2121-U Software Support Package includes MS Visual Studio DOT.net driver, Open Source Code Examples and a simple Operation/Configuration utility for an immediate device operation/implementation.