The job duties of a fire alarm installer include installing fire detection and suppression systems in buildings. In this career, you also work with alarm systems and other low voltage security alarm equipment. Your responsibilities start with the initial installation, but you also conduct maintenance and repair on existing fire alarm system components. During an installation job, you read plans or blueprints and make sure that you accurately place the fire detection or suppression components. Before leaving a job site, you test the system to guarantee proper functionality, and you make sure that the system meets fire safety codes.