installation and maintenance of access control and alarm monitoring systems; installation and maintenance of Closed circuit television cameras; installation and maintenance of Closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones, and recorders; installation and maintenance of office automation systems comprised of computer hardware, wireless and wired controllers, and downloadable software for automating security systems; installation and maintenance of office automation systems comprised of computer hardware, wireless and wired controllers, and downloadable software for automating surveillance services relating to the physical safety of persons and security of tangible property; installation and maintenance of office automation systems comprised of computer hardware, wireless and wired controllers, and downloadable software for automating access through electronically controlled doors; installation of security systems; installation and maintenance of Digital Video Surveillance Systems; installation and maintenance of Cloud-Based Camera Systems; installation and maintenance of Card Access Control systems; installation and maintenance of Cloud-Based Camera Systems