Home Fire Alarm Device What's a Home Fire Alarm Device (HFAD)? A device to detect smoke and alert occupants in the house of a fire. Sounds an alarm upon detecting smoke.Installed on the ceiling of the living room. Why should I install HFAD at home? Provide occupants with early warning of fire. Enable occupants to extinguish the fire before it escalates. Enable occupants to evacuate safely. Master Smoke Control Panel Smoke / Beam Detectors Water Monitoring System