The electronics work quite well. It鈥檚 the little things that are sooooo annoying. The seller has the magnets mount with 3M peel n stick pressure sensitive glue strips. Not sure how long ago the glue expired but the ones in my kit have all the adhesion of a wet bandaid. So 鈥 I set it up before departing on a vacation. you guessed it - the magnet half just fell off the door frame and I was getting door open alerts - so calming to think your house is being broken into when you have no way to respond just because the seller of these units is too cheap to ship them with glue strips that might have a chance of holding. I gave the seller the benefit of the doubt- took a second magnet from the kit - peeled n stuck that one on - in less than 3 days it was lying on the floor in my front hall. So 鈥 as I said 鈥 the electronics work 鈥 if you feel like messing around scraping off the pressure sensitive strip and using your own glue. Personally I regret the purchase.