DNx-DIO-462-800 – 12-Channel Electromechanical Relay Output Board

12-Channel electromechanical relay output board with current monitoring + low leakage current


The DNx-DIO-462-800 are 12-channel, electromechanical relay boards designed for use with UEI’s “Cube” and RACKtangle chassis. Based on UEI’s popular DNx-DIO-462, the DIO-462-800 is specifically designed for maintenance trainer applications or other applications which require “off ” impedance greater than 100 MegOhm.



  • 2 A continuous output current at 30 VDC
  • 750 mA continuous output current at 125 VAC
  • 200 milliohm on resistance
  • Output throughput rate of 125 updates per second

Guardian Series diagnostics

  • Programmable overcurrent protection (50 mA to 2 A)
  • Programmable overcurrent duration limits
  • Automatic detection of shorts/open and other system failures

The DIO-462-800 is part of UEI’s Guardian series. It not only controls the relay outputs, it also provides a powerful output monitoring capability: a powerful diagnostic tool that allows a repair technician to quickly and accurately identify damaged or mis-wired channels.

An on-board A/D converter also allows you to monitor AC or DC output current, which allows detection of short and open circuits as well as other “suspicious behavior”. The Guardian advantage also includes programmable overcurrent protection.

DNx-DIO-462-800 relays are in a Form C (SPDT) configuration and are rated for continuous operation at 2A at 30 VDC, and .75 Amp at 125 VAC. Contacts are rated for 10 million operations. The board provides an ON resistance of less than 200 milliohms and update rates up to 125 Hz.

I/O Chassis
Model No.


RACKtangle ®


For DAQ chassis options, click here.