The Ubiquiti UniFi Access Retrofit Hub is a DC-powered access control hub designed to modernise existing door systems while retaining current wiring and infrastructure. It supports both Wiegand and OSDP readers, making it suitable for retrofitting a wide range of legacy access installations into the UniFi Access ecosystem.

The hub provides full entry and exit control for up to two doors and supports powered or dry contact lock relays, allowing flexible integration with electric strikes, magnetic locks, and other door hardware. Additional inputs accommodate door position sensors and exit request buttons, while auxiliary relay outputs can be used for external sirens or automatic door openers.

Built for professional access control deployments, the UniFi Access Retrofit Hub enables a smooth upgrade path for commercial and multi-door environments, delivering centralised management and modern access functionality without the need for a complete system replacement.