Call us: +44 (0)1634 300900 | E-mail:

Diamond Point International

Contec DIO-8/8(USB)GY - Opto-isolated Digital I/O Module for USB2.0

8 Opto-isolated Inputs, 8 Channels of Opto-isolated (12 - 24VDC) Level Digital I/O


Contec's DIO-8/8(USB)GY is a USB 2.0 compliant module that provides digital signal I/O functions to a PC. DIO-8/8(USB)GY has 8 opto-isolated input and 8 opto-isolated output channels for 12 - 24VDC range. Using expansion modules, the number of I/O channels can be extended (up to 32 inputs and 32 outputs). In addition, this product can be directly attached onto 35-mm DIN rails for embedded applications. A Windows driver and LabVIEW library are available.

  • Opto-coupler isolated input (supporting current sink output and current source output) and opto-coupler isolated open-collector output (current sink type): DIO-8/8(USB)GY has the opto-coupler isolated input 8ch (supporting current sink output and current source output) whose response speed is 1msec and opto-coupler isolated open-collector output 8ch (current sink type).
  • Trigger monitor function integrated: The CPU inside the module can report status changes (rise and fall) to the host in a minimum cycle of 1msec.
  • Screwless connector plug allows you to easily attach and detach wires without using any special tools.
  • Easy to extend number of I/O channels using an expansion module: Adding optional modules (up to 3 units) can easily increase the number of I/O channels. The unique structure for connection by stacking enables easy and compact system configuration.
  • The design that is convenient to embedded: On the attachment which a 35mmDIN rail can install directly, it can be attached and detached easily.
  • Easy-to-develop application: Visual Basic, Visual C++, Delphi and C++ Builder sample programs and utility software are bundled.


Digital I/O/Counter/Timers

I/Os8 opto-isolated inputs
8 opto-isolated outputs
InputsCompatible with current sink output: negative logic
Compatible with current source output: positive logic
Input resistance: 3kOhms
Input ON current: 3.4mA (Min.)
Input OFF current: 0.16mA (Max.)
Response time: 1msec (Min.)
12 - 24VDC input
OutputsOpto-isolated open collector output (current sink type, negative logic)
Output voltage: 12 - 48VDC (±15%)
Output current: Max. 150mA (per point)
Number of output signal points: 8 points (8 points/common)
Response time: 1msec (Min.)
External power: 12 - 48VDC (±15%)
Connectors(s)Compatible plug: FK-MC0,5/9-ST-2,5 (made by Phoenix Contact corp.) 2.5mm-pitch nominal current: 4A (Max.)
OtherExpansion module: DIO-8/8(FIT)GY, 3 modules max, up to 24 additional input and 24 output lines


ExpansionUSB specification 2.0/1.1 standard
Electrical+5VDC 450mA(Max.)
Bus or externally 5V powered
MechanicalConnector: FK-MC0,5/9-ST-2,5 (made by Phoenix Contact corp.) 2.5mm-pitch nominal current: 4A (Max.)
Size: 50.4(W) x 64.7(D) x 94.0(H) mm (exclusive of protrusions)
Cable: USB cable 1.8m, removable, 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)
Weight100g (Not including the USB cable)
Safety/CertificationFCC, VCCI
Warranty1 Year

Ordering Details

DIO-8/8(USB)GYIsolated Digital I/O Module for USB
AccessoriesDIO-8/8(FIT)GY F&eIT series Isolated Digital I/O Module
POA200-20 F&eIT series AC adaptor (90 - 264VAC 0.3A / 5VDC 2A)
POA-AD22 AC Adapter Input 90-264VAC, Output 5VDC 2A
POW-AD13GY F&eIT series AC-DC Power Supply Unit Input 85-132VAC, Output 5VDC 3A
POW-AD22GY F&eIT series AC-DC Power Supply Unit Input 85-264VAC, Output 5VDC 2A
POW-DD10GY F&eIT series DC-DC Power Supply Unit Input : DC10-30V, Output : DC5V 3A
POW-DD43GY F&eIT series DC-DC Power Supply Unit Input : DC30-50V, Output : DC5V 3A
VI-DAQ VI Library of data acquisition for LabVIEW (free download)