USB 2.0-compliant isolated digital I/O unit with 16 optocoupler-isolated inputs and 16 open-collector outputs, connecting directly to any PC USB port without an expansion slot. Compact DIN-rail mountable housing at 188 x 78 x 30.5 mm, compatible with both current sink and current source inputs, and bundled with Windows driver library for immediate integration.
Contact Sales Department for Pricing
N Series for USB 16ch DI / 16ch DO Optocoupler Isolated DIN Rail Mount USB 2.0 Sink and Source Input Windows Driver Included
16 channels of optocoupler-isolated digital input and 16 channels of open-collector isolated output, all over a single USB 2.0 connection. The DIO-1616LN-USB installs in any PC without expansion slots, fits inside panels and enclosures via DIN rail, and ships with a Windows driver library — ready for digital signal control from day one.
16chIsolated Digital Inputs
16chOpen-Collector Outputs
USB2.0 Bus-Powered
DINRail Mountable
Contec Americas · N Series for USB
USB Digital I/O Units
DIO-1616LN-USB · 16ch DI · 16ch DO · Optocoupler Isolated · DIN Rail
View Collection
01
Slot-Free Digital I/O
Over USB 2.0
The DIO-1616LN-USB extends a PC's digital signal I/O capability through any USB 2.0 port — no expansion slot, no internal card, no chassis modification required. This makes it suitable for laptops, embedded PCs, and industrial computers where PCIe or PCI slots are unavailable or reserved for other functions.
- Optocoupler isolated — electrically separated from the PC
- Compatible with both current sink and current source outputs
- Flexible interfacing with PLCs, sensors, and relay contacts
- Screw terminal connections via 37-pin D-sub connector
- Optocoupler isolated open-collector outputs
- Compatible with current sink type loads
- Suitable for driving relays, indicators, and actuators
- Screw terminal connections via 37-pin D-sub connector
Optocoupler isolation on both input and output channels protects the PC from voltage spikes, ground loops, and electrical noise — essential when interfacing with industrial equipment, motor drives, and field devices operating at different reference voltages.
02
Compact Design and
Flexible Mounting
At 188.0 x 78.0 x 30.5 mm, the DIO-1616LN-USB is compact enough to mount inside control panels, electrical enclosures, and equipment cabinets without consuming significant space. DIN rail mounting jigs allow standard industrial installation alongside other DIN-mounted components, and floor or wall mounting is also supported.
-
DIN rail mounting — installs directly on standard DIN rail using included jigs, alongside PLCs, power supplies, and terminal blocks.
-
Floor and wall mounting — alternative installation options for enclosures without DIN rail infrastructure.
-
Compact housing (188 x 78 x 30.5 mm) — fits in tight panel spaces without requiring a full-size card cage or rack.
-
USB cable connection — standard USB 2.0 Type-B connector; connects to host PC with a standard USB cable (not included).
03
Full Specifications
| Specification |
Detail |
| Model |
DIO-1616LN-USB |
| Series |
N Series for USB |
| Interface |
USB 2.0 |
| Digital Input Channels |
16 channels |
| Input Isolation |
Optocoupler isolated |
| Input Compatibility |
Current sink and current source outputs |
| Digital Output Channels |
16 channels |
| Output Type |
Open-collector, optocoupler isolated |
| Output Compatibility |
Current sink type |
| Connector |
37-pin D-sub (I/O), USB Type-B (host connection) |
| Mounting |
DIN rail (with jigs), floor mount, wall mount |
| Dimensions (W x D x H) |
188.0 x 78.0 x 30.5 mm |
| Driver Support |
Windows driver library included |
| OS Support |
Windows (driver library supplied) |
04
Software and Driver
Support
The DIO-1616LN-USB is supplied with a Windows driver library, enabling immediate development using standard API calls. Compatible with Contec's broader DAQ software ecosystem, including .NET components and LabVIEW VI library for engineering environments.
-
Windows API (SDK) — standard driver library included; enables direct I/O control from C, C++, C#, and VB applications.
-
.NET components compatibility — integrates with Contec DAQ-DNC-FE for .NET-based application development.
-
LabVIEW VI library — compatible with DAQfast for LabVIEW-based test and measurement systems.
-
Linux driver availability — Linux API (SDK) available for download from Contec's driver software repository.
05
Certifications and
Compliance
-
CE Marking — European conformity for electromagnetic compatibility and safety directives.
-
RoHS Compliant — restriction of hazardous substances for EU and global markets.
-
USB 2.0 Compliant — standard USB interface certification for broad PC compatibility.
Ready to add isolated digital I/O to your system?
The DIO-1616LN-USB is available through Contec Americas. Contact our sales team to discuss quantity, application requirements, and compatibility with your PC or embedded computer platform.
Contact Sales Department for Pricing
Tags DIO-1616LN-USB USB Digital I/O Isolated Digital I/O 16 Channel Digital Input 16 Channel Digital Output USB DAQ Optocoupler Isolated DIN Rail I/O Module Open Collector Output USB I/O Unit PC Digital I/O Industrial USB Module N Series USB Contec DAQ
