Paxton have wide range of Access control devices and intercom systems that are used in both homes for gate control and small apartment buildings/offices.
Net 2 Range: Paxton Net2 System | Paxton Access Control
Voted
So far I have left my Paxton stuff outside of the remaining automation but would be great to link the following in to give total security
Yale door locks (already works in HA)
Paxton net2
Texecom alarms via smartcom