Simple programming
Simple programming, very good for small application using few I/0
By Miroslaw S.
Tuesday, November 3, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
276 reviews
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LabJack produces Low Cost USB/Ethernet/WiFi based measurement and automation devices providing PCs with analog inputs/outputs, digital inputs/outputs, and more.
LabJack (labjack.com) has 276 customer reviews on The Fair Hearing, with an average rating of 4.7 out of 5.
276 approved reviews, newest moderated first
Simple programming, very good for small application using few I/0
By Miroslaw S.
LabJack is the best. Simple yet flexible DAQ control. Excellent user manuals and support forums available. Responsive engineering support from LabJack.
By Engineer
Labjack U3 user. Nice product, mature, available for a long time, performs as promised. Definitely a good choice for PC-based data acquisition. 4 stars instead of 5 because the documentation could be better structured / more polished. Examples: * Datasheet: no simple overview of the no of channels / channel types, a lot of scrolling through sections 2.6.x, 2.7.x and appendix just to have an overview of the no of channels + associated specs. * Chapter 4: function calls are listed, but take e.g. 4.2.3 ePut -> accepts parameters -> takes some browsing to find out this can be used for e.g. quickSettling -> more browsing to find explanation in 2.6 for quickSettling In the end all information _is_ available. But some short tutorial, or more documented example code right near the description might help.
By droedel
Response from LabJack· Jul 1, 2021
Thanks for the feedback, positive and negative. LabJack's core focus in the data acquisition marketplace is providing the best computer based DAQs, so we love hearing what you think is great, and need to hear what you think has room for improvement. Your identification of areas of the U3 Datasheet that could use improvement is fair, and suggests that you have been immersed in the U3 at some point. For anyone reading this in the future, our primary tip for programmers new to the U3 and UD library, would be to focus on Section 4.3 (pseudocode) as the first place to look for information about the linkage between the U3 device and the UD library. We will make a to-do to look for areas of the site where we can further emphasize the importance of Section 4.3. Note that with our newer devices (T-series), improvements to the low-level protocol, high-level LJM library and hardware datasheet, all combine to improve this experience.
I got a labjack u3-hv system because it's probably the best bang-for-your-buck out there when it comes to ready-made DAQ systems. The documentation was good enough that I was able to interface it with matlab and figure everything out in a couple of days. I would definitely recommend LabJack systems to anyone (and definitely hope I get the chance to use the higher-end systems someday).
By mdflood
Response from LabJack· Jun 30, 2021
Hi Mdflood, Thanks for the kind words. Glad the U3 worked well for your application. Let us know about your next application that will leverage the power of the T7 or stay tuned for even more powerful device to come...
My T7 lab jack is pretty much my go to device for all things experimental. It’s easy to reconfigure and get useful data coming in and controls going out. For more production work, we even have a few smaller jacks under our lab floors. Most people have forgotten they even exist, yet they don’t realize they depend on them every day. I do wish the T7’s wireless security was more up to date for proper full 64 character WPA2 PSK pass phrases or (preferably) WPA Enterprise authentication. That’s my only real gripe.
By Robert
Response from LabJack· Jun 30, 2021
Hi Robert, thanks for the kind words and feedback. Have you checked out some of the travel routers that can be connected to the LabJack to improve wireless performance and security? Not only are they less expensive that the T7-Pro their wireless performance is far superior. Look for improved wireless performance and security on our next major hardware revision. https://labjack.com/support/suggested-travel-routerswifi-bridges
Excellent choice of reasonably priced data acquisition and control boards. It was an optimal solution for a project with limited funding and put together by university grad students. Very good support and access to resources as well. Thank you for putting out these DAQs. It is an excellent resource compared to very expensive DAQ solutions by large companies.
By bidzina
Response from LabJack· Jul 1, 2021
Awesome feedback, this is exactly why we created LabJack products! To serve customers like you and then allow you to take you those skills into your careers wherever they lead be it teaching, scientific research or challenging R&D products that require fast and accurate measurements.
Labjack installed and worked as described without any problem.
By Court
Response from LabJack· Jul 1, 2021
two thumbs up, exactly what we want to provide!
We have been using U3-LV & U3-HV in our low volume production, flash equipment for over a year and they have never failed. The only gripe I have is the turn on (wake up) time had caused us some annoying race issues with the software that we wrote to communicate with them when they were powered up when we were developing the software.
By albert_j_hoffman
Response from LabJack· Jul 1, 2021
Thanks Albert, if we remember correctly you reported an issue that we were able to remedy but can understand the annoyance and delay it likely caused. Thanks for the feedback and 5 stars. Customers like you help us make new and existing products better for all our customers-past, present and future.