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Diamond Point International

Contec DIO-0808RN-USB - Isolated N Series Digital I/O Terminal for USB2.0

Eight Channel Opto-Isolated Inputs, Eight Channel Opto-Isolated Outputs


Contec's DIO-0808RN-USB is an USB2.0-compliant digital I/O unit that provides digital I/O functionality from the USB port of a PC. This product is compatible with input digital signals at 12 - 24VDC which features 8 channels of Optocoupler isolated inputs (compatible with current sink output/current source output) and 8 channels of SPDT relay outputs with independent common.

The units compact design (188.0(W) x 78.0(D) x 30.5(H)) makes it easy to install the product within the panel or device using DIN rail mounting jigs, or on the floor or wall.

A Windows driver library and LabVIEW library are available.

  • Installation on the floor / wall /ceiling is possible by screw fastening, magnet, rubber feet, etc. In addition, DIN rail mounting mechanism is equipped as standard with the product, making it easy to install the product within the panel or the device.
  • Compact design of 188.0(W) x 78.0(D) x 30.5(H) does not require special installation location.
  • Adoption of terminal connector (with screws) enables to achieve easy wiring.
  • This product has 8 channels of SPDT relay outputs (Form C) with independent common. Independent common terminal provided per channel, capable of supporting a different external power supply. High-capacity output rating is designed to be a maximum of 6A 240V (AC), 5A 28V (DC) per channel.
  • This product has 8 channels of Optocoupler isolated inputs (compatible with current sink output/current source output) whose response speed is 200µsec, supporting driver voltages of 12 - 24 VDC for input. 8 channels share one common.
  • As the USB I/F on PC is isolated from the input interfaces by opto-couplers and output interfaces by relays, this product has excellent noise performance.
  • Using the attached digital I/O driver API-DIO(WDM) makes it possible to create applications of Windows. In addition, a diagnostic program by which the operations of hardware can be checked is provided.
  • Using the dedicated library VI-DAQ makes it possible to make a LabVIEW application.


Digital I/O/Counter/Timers

I/Os8 opto-isolated inputs
8 opto-isolated outputs
InputsOpto-isolated input (Compatible with current sink/current source output) (Negative logic)
Input resistance: 4.7 kOhms
Input ON current: 2.0mA or more
Input OFF current: 0.16mA or less
Response time: Within 200 microsecs
OutputsOpto-isolated open collector output (current sink type) (Negative logic)
Max capacity: 6A 240VAC, 5A 28VDC (load resistor)
Max. permitted voltage: 240V (Max.)
Max. Carry Current: 5A (Max.)
Contact resistance (Initial state): 100mOhms max.
Operate time: Within 10ms
Release time: Within 5ms
Mechanical Life Expectancy: 10,000,000 operations min or more
Switching times : 300 operations/min
Electrical Lifetime: 50,000 operations min, switching times : 30 operations/min
Relay Type: G6RL-1
Connectors(s)10 pin (screw-terminal) plug header x4


ExpansionUSB specification 2.0/1.1 standard
Electrical5VDC 430mA
Bus powered
MechanicalConnector: 10 pin (screw-terminal) plug header x4
Size: 188.0(W) x 78.0(D) x 30.5(H) mm (No protrusions)
Cable: USB cable 1.8m, included
SoftwareWindows: Win32 API (Visual C# .Net, Visual Basic .Net, Visual C++ .Net examples), 32 or 64 bit architecture
OS Support:
• Windows 2000 (32 bit only)
• Windows XP, Vista, Server 2008, 7, 8, 8.1 (all 32 and 64 bit)
Data acquisition VI library for LabVIEW (VI-DAQ)
TemperatureTemperature range (operation): 0 to +50°C
Humidity10 - 90%RH (No condensation)
Weight300g (Not including the USB cable, attachment)
Safety/CertificationFCC, VCCI
Warranty1 Year

Ordering Details

BoardDIO-0808RN-USB Isolated Digital I/O Terminal
AccessoriesVI-DAQ VI Library of data acquisition for LabVIEW (free download)