LabJack (labjack.com) has a 4.8 out of 5 rating on OK.one, based on 64 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is excellent. Praise is nearly unanimous, with 97% rating it 4 stars or higher; The business has replied to 100% of negative reviews; 1 of them were added in the last 12 months. Last updated 2026-08-10.
What people say
R
Robert · 1 review · Verified ·
★★★★★
My T7 lab jack is my go to solution
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.
Reply from LabJack2021-06-30
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
d
droedel · 1 review · Verified ·
★★★★★
Happy Labjack U3 user
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.
Reply from LabJack2021-07-01
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.
b
bobstanl · 1 review · Verified ·
★★★★★
Support helped me understand how…
Support helped me understand how feedbackArguments were sent to getFeedback() in python. Had struggled for some time, thinking I had to create new feedbackArguments every call, since I wanted to change state of u3.BitStateWrite(14, LCLsetting['SWactivLEDst']) output each time. Once I realized the setup did not need to be change, just change the ...LEDst, it saved cycle time in my call. Thanks!
d
deh · 1 review · Verified ·
★★★★★
I use U6-pros with Python for DAQ
I use U6-pros with Python for DAQ. Multiple (20) projects over the last decade -they work great. Response from company, I think I've asked 2 questions, (I like email) is quick, concise and correct. For those complaining about the documentation, I say spend 1 hour "actually" reading the manual and you'll have no problems, EVERYTHING is documented. Good products, high accuracy. I'm still buying them. Tick-products are a bit expensive.
