Product review (1 stars): In other words - this was a waste of $10
Simply doesn't work. The temperature reading is way off (by 10 degrees or more) and not consistently  off either. In other words, it's worthless. Only after I tried to return it did I realize there are no returns. I tried to contact the seller to see if they would send me a replacement and they just asked me if I had it on top of the heater or in direct sunlight (which I didn't). I wrote them back saying it's in the middle of the room out of direct sunlight and that I was wondering if I could get a functioning replacement and they just didn't respond. In other words - this was a waste of $10. Get a different one!