As a security system technician, you install, configure, maintain, and repair video surveillance, alarms, and other security equipment while conforming to all safety protocols and other relevant codes. This applies to the physical security and access to a building, as well as security systems to protect computer networking assets, where you establish system access with IDs, teach clients about creating passwords, and keep accurate records. You examine damaged systems to troubleshoot problems such as loose connections and broken insulation. Your duties also include drilling holes for wiring, running and positioning cables, studying install sites and building plans/blueprints to determine required materials and to ensure correct installation. Other responsibilities include mounting control panels, sensors, video cameras, conduits, and more. Once systems are installed, you run tests on circuits, sensors, backup batteries, sirens, and other security features to verify they are functioning properly.