Once fixed it works fine.
924358
The lock was defective on receipt.  Bolt would not completely retract under power or electric.  Removed the covers and reset one of the gear wheels.  Works fine now.
112138
Not as fine as I thought it would be, but it works just fine.
3668214
Once I got it to work properly, it does an amazing job .
3211247
I don't like the connections as they came loose on the first try, but reworked after I reinstalled and so far so good.
1545814
Setup took some time, ran into some glitches and the instruction weren't much help in my case, but seems to work fine after it's set up.
474678
It works well, one of the two was mis-shaped when I took it out of the box (which was a bit thin) but I was able to get it back in shape.

Works well
2293675
Had trouble when I tried to order this the first time but got it straightened out and they work as expected.
1352775
Works as expected.  Didn't  work at first so I opened battery compartment and removed plastic film. Wasn't in the instructions, but it's  the first logical step to troubleshoot cheap electric gadgets. Worked fine after that. Occasional the yellow button gets misaligned and slides back into unit, but it's  easy enough to put it back into place. It's  a small plastic square with a button. It's  cheap, and it does what it's  supposed to do.
4249908
Works fine. Sometimes it fails to work and you have to manually interfere, but over all satisfactory.
3529094
When I first got it the computer froze every time I opened it but a week or two later I guess some updates for it came out and the computer works fine now.
2612481
Although the printed and online instructions are very poor, through trial and error I eventually got it to work and it did an adequate  job.
3782105
works ok but had to do minor repairs as it was assebled
4001992
The device works reasonably well once the instructions have been mastered.
4335935
assembly instructions were unclear, but it finally came together and works fine.
786302
Took some minor adjustments for it to fit, but then it works like a champ.
1041860
Worked well, testing it in the beginning was a bit of hit or miss, but in the end it's all good.
933522
Had to fix an issues that the USB ports were not working. After looking around in the system and downloading a couple of drivers I fixed it.