Very easy to install and configure to control whatever you like. I wish it had the ability to customise which switches did what. Apparently this used to be possible in the app but no longer is. There are paid 3rd party apps that still let you do it though.
I also wish it came with a thinner mount as the current mount is too wide to go on an architrave. I ended up 3D printing a mount which worked out well.
Also a minor issue seems to be that there is a very slight misalignment of one of the dimmer buttons. I have 4 dimmers and this seems to be an issue on all of them. Makes no functional difference but the neat freak in me is bothered by it.