The Visual Inspection

摘要

The calls vary, but all have a similar theme: "My fire alarm system needs work. Can you help?" Of course, the answer is always yes. But professional contractors know they must make a thorough investigation of the installed system before determining the scope of the work. Conducting only a visual inspection of the fire alarm system may not give you all the information you need to determine what the system needs in terms of repairs or upgrades. But, such an inspection offers an important start. The visual inspection may reveal if you need to totally replace the system.