Paxton 10 - 337-075 Server
About – A single Paxton10 server is required to support up to 1000 doors across multiple sites. Paxton10’s modular, one door controller architecture provides a cost-effective solution that supports camera and door management from a single controller.
Please see link below to Datasheet
https://www.paxton-access.com/wp-content/uploads/2019/10/DS0005.pdf