Smoke Alarm Diagram - How a Basic Fire Detection Device Works #3315631 (License: Personal Use)

This black-and-white line drawing depicts a typical ionization or photoelectric smoke detector, featuring a circular housing with a labeled “SMOKE ALARM” ring, slotted air vents for smoke entry, and a central test/hush button flanked by two indicator LEDs. The minimalist style emphasizes functional parts without distracting details, making it ideal for educational or instructional use. It represents a common residential unit used to detect smoke and alert occupants during early-stage fires.

Used in fire safety guides, building code documentation, home inspection reports, and public awareness campaigns; matches user intent to understand smoke alarm structure, installation, or troubleshooting basics.