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Access Control

ATG Group is a certified S2 partner.  S2 provides an open-platform, IP-based access control system.

Milestone ACM Integration

Data Sheet and Pricing Information


Great entry-level system perfect for small businesses looking to take advantage of all the benefits S2 access control offers.

  • Up to 32 portals
  • Simplified web interface
  • Camera integration – perfect for reception areas


Solid mid-level system that grows with your business.

  • Up to 64 portals
  • Supports 32 nodes
  • Widget desktop – custom monitoring console
  • Video (DVR/NVR) integration
  • Automatic network backup
  • Easy migration path to Enterprise


S2’s top-of-the-line access control product.  Includes all the features of Netbox plus:

  • Up to 5,000 portals
  • Supports 256 nodes
  • Multiple database partitions
  • Available with a hot-swap RAID disk array