The setup was short, but instructions could be clearer since it mentions vague words such as 'voice prompt', whereas the voice prompt doesn't directly tell users to show the QR code to the camera.
Other than that, I'm very happy with the price & quality. I especially like the image recognition that this has: it can detect people, vehicles and pets and seem to work quite well.
It's got a ton of options too to configure it exactly as one likes. Over all, highly recommended.