The "UVC-G4 Doorbell Pro (WLAN)" does not require a PoE connection as it is designed for mains operation. However, if you prefer a PoE connection, there is a separate model that is specifically designed for PoE, such as the "UVC-G4 Doorbell Pro PoE Kit". This kit contains all the necessary components for a PoE installation. No additional power supply accessory is required for the "UVC-G4 Doorbell Pro (WLAN)" itself to operate it via PoE, as it is not designed for PoE as standard.