NI USB-6525 8 Solid-State Relays, 8 DI, Counter, Ch-to-Ch Isolated

  • Print
  • PDF
  • Rich Text
  • Eight 60 VDC/30 Vrms, 500 mA solid-state relays and eight ±60 VDC digital inputs
  • One 32-bit, 5 kHz counter
  • 60 VDC channel-to-channel isolation
  • Screw terminals and built-in strain relief
  • Industrial feature set including change detection, power-up states, filters, and watchdog timers
  • NI-DAQmx driver software for highest productivity and performance
  • View Data Sheet
  • View Support Resources
The NI USB-6525 is a bus-powered USB device with eight normally open solid-state relay outputs featuring 60 VDC/30 Vrms switching voltage and 500 mA per channel maximum switching current. The solid-state relay outputs are ideal for controlling pumps, valves, motors, and various other industrial actuators. The USB-6525 also features eight ±60 VDC channel-to-channel isolated digital inputs to read from industrial digital sensors. You can use one of the digital input channels as a 5 kHz, 32-bit counter for counting digital pulses and measuring frequency and pulse widths.

Isolated channels break ground loops and offer protection from noise and spikes on external signals. For added ease of use and reliability, the USB-6525 features built-in screw terminals and strain relief.

Industrial Feature Set
NI industrial digital I/O devices offer a set of high-reliability features designed to automate even the most demanding applications. Programmable power-up states provide safe operation when connected to pumps, valves, motors, and relays. Digital I/O watchdog timers detect computer or application crashes and ensure safe recovery. Change detection triggers your application and performs a read operation after a digital event with minimal processor usage. Programmable input filters eliminate glitches/spikes and remove noise.

Driver Software
The USB-6525 works with NI-DAQmx driver software, which features an easy-to-use and intuitive interface for programming. The device, which is compatible with NI LabVIEW, NI LabWindows™/CVI, ANSI C/C++, C#, Visual Basic .NET, and Visual Basic 6.0, works with standard Windows OSs.

The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.

View Data Sheet | View Pricing and Purchasing Information

Specifications Documents

  • View Data Sheet

Specifications Summary


NI USB-6525 Complete Package

Each NI USB-6525 requires:

NI USB-6525

NI USB-6525 and Accessories

NI USB-6525 - 779640-01 Qty $ 319 each
Optional Accessories
Qty $ 37 each
Hardware Subtotal: $ 319

Subtotal: $ 319

Add to Cart >>
Guarantee your price for 30 days (learn more) Instant Quote

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:


NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.


NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support