dead on arrival - edit: all better!
591648
Not sure how well the product works because mine was dead on arrival. Amazon won't process a return on this item because it includes a can of compressed air. Now I need to wait two weeks or more for a replacement from the manufacturer. Bummer.

Edit:  the company replaced the sensor head for me last year and it works great. The cat tried it out one time last year and since then she usually doesn't even bother going to that corner of the house! This is a perfect solution for keeping a cat-dander-free guest bedroom! I don't really even need to keep it switched on anymore although she does know that she can get in that room if the can isn't in the doorway.
1450470
Good instructions, ten minute easy to install, twenty minute trouble shoot, dead on arrival. Checked breaker, switch and voltage, everything OK. Reinstalled old light and it worked like a champ. Purchasing a different brand from Amazon.
3360590
update:

Amazon very kindly sent me a new one after I complained like a jerk (sorry guys). Works just fine. Go ahead and buy an adapter for it just in case, you more than likely will need one.

Old:
Just received this product, it's pretty clearly getting power (lights turn on) and I double checked that my displays are providing enough power to the unit. However it does not work. Totally DOA. Pretty bummed I can't return it. Another waste of money.
1453650
Dead on arrival, but I didn't have a chance to install it before the return window closed. Pieces can be heard rattling around inside the control unit. Obviously a defective unit but clearly an issue with the quality.
3118167
Item was dead on arrival. Checked with my multimeter and it is putting out 0V AC or DC.
4017546
Just disappointed since one arrived 'DOA' (Dead on Arrival).  I even put them both up over my back yard and one of the two worked perfectly!  I had to return them and did not feel like taking another chance.  I might have gotten two working models for replacements, and I might not have.  The great disappointment for me is the one that worked was perfect!  REALLY BRIGHT!

Shoot!
2828445
Dead on arrival.
The unit would not work even though it was being given power as verified by a multimeter, no led light flashes at all.
I jacked it into the the computer and still nothing, the updater will not even recognise it.
Will contact amazon for a refund shortly.

UPDATE
Amazon refunded the purchase and i got another unit. Once I connected the wires and switched on the ignition the unit automatically detected my steering controls and works flawlessly with pioneer AVH5700BHS in a Suzuki Grand Vitara.
3839975
This thing died within an hour of usage.  Time to start recovery operations.
3944850
Received the product and was impressed with the look and ease of set up.  Unfortunately, the turntable would turn on, but not start. Returning it for a replacement and I will updates this review at that time. {one star}

Update 7/20/16: received replacement and appears to be working well. {upgraded to four stars}
3912659
Sorry to say it was DOA...doesn't turn on for more than a few seconds, so obviously doesn't work.  back it goes
1165809
DOA. When I took it out of the box, I was alarmed to hear something rattling around inside. Hope against hope I started it up. Sure enough...nothing.
4639519
Dead on arrival attempted to charge with the specified power supply. Doesn't work maybe it would be smarter to include the proper power supply. 5v 1ma said the instructions. Or it was a bad unit?
1942572
it came here without any instructions,no on or off button. I plugged into my usb and NOTHING ...its totally dead ..not even worth to return it

add- 0n to my review :talking to the company now and send 5 photos in .I will see what happens now

update :will receive a replacement item in a few days.

it was replaced immediately !the replacement item works very well.

costumer service is excellent.its working perfect ,fans are a lil noisy but its not bothering.
3719009
Was dead on arrival - be wary as this is probably a device that has a 50/50 shot of actually working.
2567121
Packet arrived. One unit functioned accordingly, The other did not function, period. I wrote a complaint but await a response assuming I would get a replacement.
Well........?
Any one reading these?
2007148
Pros: Amazon return policy
  Getting a new one Monday.
Cons: Dead on arrival
  Wouldnt properly install Windows through installation media.
  Wouldnt post.

Once I get my new one up and running I'll edit my rating.
3737905
First one was DOA, started the return/replacement process, we'll see if the second is any better. Depending on IF it works, I'll definitely update my review.