This product serves its purpose, but there are three things that could be improved. First, the plunger picks up powder and drops it on the press. Cleaning the brass plunger, and using dryer sheets to reduce static does not help the problem. Perhaps some sort of coating on the plunger would help. Second, it's difficult to rotate the red die body in the press while keeping the sensor stationary. One direction of rotation is easy, the other very tight. Fully loosening the socket head screw does not decrease the friction. Finally, adjusting the magnet to the correct level is a difficult operation. The smooth shaft provides no index to see the amount of movement while adjusting. If the magnet slips, the starting point is lost. Perhaps threading the shaft and magnet would allow an incremental adjustment, and prevent loss of the starting point.

[DAA Reply]:
Thanks for your feedback and comments. It is appreciate. This may help:
Indeed, with some powders, in some climates, small amounts of powder can be picked up through static. This is difficult to avoid but typically is not an amount that has any real effect on function/accuracy. we updated the shoe from plastic to brass to help with this, but its not a perfect solution.
The plastic bracket is indeed made of firm material and can be tight on the die to rotate even when the screw is open. This can be easily overcome by inserting a little wedge, like a match or some folded carboard to keep it open while you setup.
Threading the rod for fine adjustment is a good idea we did toy with, but found that it added too much friction when the rod was reversed for 223. You can use a pencil to mark a reference line on the side of the body of the powder check, which is near the magnet, and use that for a reference while setting up.

Can be very sensitive with certain powders. Constantly adjusting it. Hoping DAA will allow me to return it, as it didn't work for me.
DAA has a lot of great ideas, and I've purchased many of them over the years.

I originally purchased a Dillion powder check for my 9mm 1050 toolhead;

https://www.amazon.com/Dillon-Precision-Powder-Check-System/dp/B00XM3GBYG

I replaced it with the DAA Magnetic Powder Check and bought additional powder checks for my 45 ACP and 5.56 toolheads. The DAA Powder Check is a superior design because the height is adjusted based upon the height of the magnet. It is easier to install and doesn't get out of adjustment like the Dillon powder check.

Stop if you are going to get a powder check and you are considering the Dillon. I had to continue to check the powder level visually when using the Dillon to avoid squibs. Why bother getting a powder check if you still need to check the powder visually to eliminate squibs?

This powder checker is fabulous! I never really had confidence in the other powder checkers I had this one has the alarm, LED light signal and is super sensitive and easy to set. It is totally changed my reloading game!

Works great if Im using a specific brand of brass. Dial it in for Winchester brass, and it chugs right along with no problem. If you collect range brass as I do, you cant run hodge-podge brass through it. Differences in head space from brand to brand will set off the alarm.

Works great but I can’t use it because the two in one die did not work for me ?