I’ve purchased several cheap security cameras from other sellers and manufacturers on Amazon and eBay and have had endless problems with them losing signal or not alerting me - their app also fails, especially after updates. This cheap security camera has worked very well - the motion alerts always show up, and so far, the app has been easy to set up, operate, and reliable. I just hope they don’t spoil it with a bad update. This deal is so good, I bought another one for another room. Fingers crossed that these things keep working for a year or two.