Choosing Centec Security Systems Integration to secure your business is an easy decision. Centec is one of Wisconsin's largest security system integrators with proven expertise in the design, installation and service of commercial and executive residential clients. Centec integrates multiple systems such as video surveillance, access control, intrusion alarms, fire detection and others to perform under one operating platform where only one call must be made for service on any system. Our design and engineering team will coordinate all of your security and life safety services with architects, engineers, general contractors and IT/IS personnel.