Keri Systems is one of the world's most popular providers of access control and integrated security systems. They offer systems to meet the requirements of all types, from simple systems for just a few doors to systems with larger scale and even enterprise requirements, with integrated video, photo badging, biometric, graphic maps, telephone entry and many other powerful features.
Their hardware can be deployed using traditional proprietary security networking techniques, or standard TCP/IP networking utilizing your existing network or one dedicated to the security system. But they're more than just a products company. Since their inception in 1990, they have prided themselves on quality, ease of installation and use, and customer service.