After reloading for many years, I recently made the transition to a progressive press. I primarily reload 9x19 and selected a Mark 7 Apex 10 press. The DAA Powder Check 2.0 is installed immediately following the powder drop and before the bullet drop. The DAA Powder Check 2.0 installed and adjusted easily.

The ONLY issue I have with the Powder Check 2.0 is that it did create a significant mess on the shellplate after 200 to 300 rounds. The problem is not caused by static electricity, but rather the airflow caused by the powder check brass plunger displacing the air inside the case during the stroke. The problem is likely more significant when loading 9mm with fine powders (my case). Also, the fact that the brass plunger enters the case at the point of the stroke when the tool head is moving most rapidly doesn't help.
After much weeping and gnashing of teeth, I was able to mitigate the issue substantially. After setting the powder check die depth correctly, I purposely inserted a case that was loaded with powder 1 grain lighter than my normal charge and cycled the toolhead down. With the toolhead down, I put a zip tie around the steel shaft at the top of the die so that the plunger could not drop any lower during operation. I then removed the light loaded case, and replaced it with a correctly charged case to complete the setup (magnet position). Basically, I just reduced the speed that the brass plunger is moving when it enters the case now.
Doing this, the powder mess was almost completely eliminated and the powder check still identifies incorrect loads.
My initial thought was to give a lower review, but I believe the problem I encountered was due to the combination of the case dimensions, type of powder, dimensions of the brass plunger, and speed of the press stroke in my circumstance.
It's a very innovative product that works quite well in most circumstances. 4 stars and I will purchase the DAA powder check again if the need arises.

Thought I was only going to use on 38 Special reloading because of tall, small case which is difficult to see powder levels. But because it is so easy to setup, I use for everything. The light and buzzer give you peace of mind.

Very good quality and functional, and it fits my new Lee six pack pro just fin !!!

Nice unit. A little touchy but once you get it set it works as advertised. The alarm is a great feature as you do not have to look inside the cases to check powder levels. The red led is also a great feature. I tested this on charges of 3.5 grains of Bullseye in 38spl cases. It has a differential range of about 3/10 of a grain so be careful using maximum loads. All in all I like this as I don't have to keep watching the stem on my manual powder check die. I am using this on a Hornady progressive 5 station press.

Works as advertised and is easy to set up. I have a powder bar adjustment knob from another company installed and the magnet will hit the knob if there isn't a case in station 2 to make the powder bar move forward thus not allowing you to make a full stroke. Does the Double AA adjustment knob have a narrower profile if so this might eliminate the problem I am having.

This does a nice job on my Lee Pro 6000. It’s a bit finicky, but when you get it properly set it works well. Sometimes, after going through the instructions and setting it up, you think it’s set exactly right. Then when you start using it, it makes very short blips on the up or down stroke. So, the magnet needs to be adjusted again. I also find it very difficult to turn the die - but maybe the threads just need a bit of wax or something. Generally a good product and I’ll keep using it.