Plan, install and maintain fire alarm systems. Includes professional execution to standards and manufacturer specifications, appropriate measuring and testing steps, occupational safety, and complete documentation of the work performed.Plan, install and maintain fire alarm systems. Includes professional execution to standards and manufacturer specifications, appropriate measuring and testing steps, occupational safety, and complete documentation of the work performed.Plan, install and maintain fire alarm systems. Includes professional execution to standards and manufacturer specifications, appropriate measuring and testing steps, occupational safety, and complete documentation of the work performed.