The camera quality is great for the money and the control from the app is great. You can zoom in, hear anybody there pluses speak or shout at them and choose to set off a siren or flash lights at them. But despite lots of correspondence and changing settings we can't det alerts.
We also have the smaller GX2S which works fine, although it takes a few seconds to come from "Dormant" so if someone can get to your property in a few seconds the camera won't catch them.