Set per-room occupancy limits, and easily grant or revoke access to students, faculty, and staff. Schools can use keri’s security systems to create customized emergency response procedures based on emergency type. Doors. net is keri’s access control and security management software application to manage both the tcp/ip-based nxt hardware and the rs-485 networked pxl-500 hardware as well as 3rd party hardware platforms such as mercury, allegion, schlage. With over 30 years experience, keri systems has become one of the fastest growing card access control systems manufacturers in the world. Keri systems is a leading provider of access control and integrated security systems, offering tailored solutions to all our clients. With keris cloud based access control system, businesses can easily manage and monitor their facilities doors and access points remotely. Keri systems cloud based access control solutions to help businesses secure their premises and protect valuable assets.