- Free logging software—NI FlexLogger™ Lite
- Seamless LabVIEW integration
- Documented APIs with example programs for Python, C/C++, C#, and more
What Is a Multifunction I/O Device?
A Multifunction I/O Device offers a trusted foundation for accurate data acquisition and control, combining flexible I/O capabilities with reliable performance across a wide range of industry applications.
New 18-Bit PXI Express and 208-Channel PCI Express DAQ Devices
The new NI DAQ Multifunction I/O devices deliver higher channel density, better resolution, and lower cost per channel. Choose from six new DAQ devices across both PCI and PXI to scale your test system.
High-Density PCI Express Devices
PCIe-6345 (80 AI, 16-bit, 500 kS/s, 2 AO, 24 DIO), PCIe-6347 (208 AI, 16-bit, 500 kS/s, 2 AO, 24 DIO), PCIe-6355 (80 AI, 16-bit, 1.25 MS/s, 2 AO, 24 DIO),
PCIe-6357 (208 AI, 16-bit, 1.25 MS/s, 2 AO, 24 DIO)
High-Accuracy PXI Express Devices
PXIe-6381 (16 AI, 18-bit, 625 kS/s, 2 AO, 24 DIO), PXIe-6383 (32 AI, 18-bit, 625 kS/s, 4 AO, 48 DIO)
The Best NI USB DAQ Device Ever
With 20-bit resolution, high-speed inputs, seamless NI LabVIEW integration, enhanced Python support, and a host of setup improvements, NI mioDAQ devices set a new standard for bus-powered USB data acquisition. Put one on your bench to catch problems before they impact your product launch.
High-Quality ±10 V Inputs with NI USB DAQ
With multiple decades of research and development expertise behind it, a Multifunction I/O Device can ensure every measurement is highly accurate and repeatable. You can rest assured that your NI DAQ device provides reliable performance from one measurement to the next.
Featured Content
Guide to Sensor Measurements
In addition to the sensor characteristics, you must consider the required hardware and software to properly condition, acquire, and visualize sensor measurements. Learn more about the measurement hardware and software processing necessary for your sensor.
Quick Selection
Most User-Friendly
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NI USB-6421
250 kS/s
16 SE, 8 DI AI Channels
16 DIO
2 AO Channels
Most Popular
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NI PCIe-6321
250 kS/s
16 SE, 8 DI AI Channels
24 DIO
2 AO Channels
High-Speed
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NI PCIe-6350
1.25 MS/s
16 SE, 8 DI AI Channels
24 DIO
High-Performance
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NI PXIe-6363
2 MS/s
32 SE, 16 DI AI Channels
48 DIO
4 AO Channels
Best Value
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NI PXIe-6323
- 250 kS/s
- 32 SE, 16 DI AI Channels
- 48 DIO
- 4 AO Channels
Industry-Leading DAQ Software Included
DAQ Webinar Library
Whether you’re validating at the bench or scaling to complex test systems, our on‑demand DAQ webinars can show you how to architect accurate, reliable, and scalable measurement solutions.
Need more choices? Discover more NI DAQ hardware.
Sensor Measurements
CompactDAQ systems are more rugged than multifunction I/O devices and can measure sensors like IEPE accelerometers, thermocouples, and load cells. Select from more than 70 measurement modules and eight chassis (USB or Ethernet) available to assemble your optimal measurement system.
Recommended Uses:
- Mechanical tests
- Logging sensor data to a PC
- Shock and vibration tests
- Acoustic measurements
More Speed and More Channels
PXI systems are like a PC, except they have up to 17 expansion slots so you can keep adding high-speed, synchronized channels for large measurement systems.
Recommended Uses:
- Research and electronic test benches
- PCBA manufacturing test systems
- I/O for firmware test
- Sensors that output 10 V
Waterproof, Shockproof DAQ
IP67-rated, ultra-rugged design for voltage, strain/bridge, accelerometer/microphone, and thermocouple measurements. Link and sync with a single Ethernet cable.
Recommended Uses:
- Engine test cells
- Static fire rocket tests
- Structural research
- Heavy equipment field test
PRODUCT SUPPORT RESOURCES
Support Library
Explore a wide range of support content, including examples and troubleshooting information.