David Grinstead

Part of Johnson Controls International Plc, Controlled Electronic Management Systems Ltd. (CEM Systems) is a leading provider of access control and fully integrated security management systems. Founded in 1991, the company is based in Belfast, UK. CEM Systems manufactures both the AC2000 Access Control hardware and software, offering a comprehensive, resilient, and flexible security system. The British company's solutions are installed worldwide where security is paramount, and they offer customers a fully integrated security management solution, access control software, and full integration of the AC2000 security system.