If you are supplying your own HDDs, please ensure they meet Ubiquiti's general guidelines and aren't found on our list of incompatible models.
Here are some comparable alternatives that will give your UniFi deployment the functionality you're looking for.
Meet UniFi Protect G4 Doorbell
A WiFi video doorbell with an integrated display and two-way communication capability.
HD Image Quality
Features a built-in 5MP camera that streams up to 1600x1200 HD video at 45 FPS.*
* maximum FPS in high framerate mode on lower resolution
Its weatherproof design ensures reliable performance in the harshest conditions.
Night Vision Surveillance
Maintain a clear view of objects and visitors even in the middle the night.
Integrated Entrance Lighting
An in-unit light helps you instantly identify visitors.
PIR Motion Detection
The PIR sensor detects motion around your door and alerts you via email or push notification.
The display can show welcome messages, access statuses, and other system information.
Easy to Mount
Streamline the mounting process by using your existing doorbell wiring.