Not a POE system, but we are using this Lorex doorbell camera with the unit. It powers through the doorbell wires and integrated perfectly using a channel like a POE would. (I believe you can have 2 wireless cameras, so this doorbell counts as 1) Also works seamless as part of the system on the app.
* Lorex 2K QHD Wi-Fi Video Doorbell Outdoor Security Camera | Person Detection & Color Night Vision | Ultra-Wide Angle Lens & Two-Way Talk | Incl. 32GB MicroSD Card [Requires existing doorbell Wiring]