called to a commercial property to troubleshoot an issue with the fire alarm system that was repeatedly going into false alarm mode. Upon inspection, I found that one of the smoke detectors in a high-traffic hallway was overly sensitive due to dust buildup from recent renovation work. This was triggering false alarms and disrupting business operations. I carefully cleaned the affected detector and then checked the rest of the system for any additional maintenance issues. After resetting the panel and conducting a full system test, all devices responded correctly and no further false alarms occurred. I advised the building manager to schedule routine maintenance following any construction activity to prevent similar issues.