@gcluley I've been using the Ubiquiti G4 Doorbell pro for a couple months and it works great. Can be powered off a doorbell transformer or POE (diff models). It has two cameras: one pointing outward and one pointing down for packages. It also has a LED light to help with keys, etc. if you need that. Paired with a Unifi Dream machine SE and an 8TB HD you can record 24x7 for months and months. I have it tied into HomeKit (if that's your thing) using homebridge.