🔍 Key Concepts

• Compare the thermometer/temperature-related symbol with any symbols that look like general detectors or alarms. • Remember that a heat detector is different from a smoke detector or sprinkler head – look for something that clearly suggests temperature, not water spray or smoke. • Focus on the lower part (Part 2) of the illustration where individual detector types are grouped together with other fire-detection symbols.

💭 Think About

• Which numbered symbol most clearly represents temperature or heating rather than water, gas, or general alarms? • Looking at symbols 18, 31, 49, and 63 specifically, ask yourself: which one would you instantly recognize as having to do with heat or temperature even if you didn’t know the numbering? • Do any of the choices resemble directional signs, clothing, or hooks rather than detectors? Eliminate those first.

✅ Before You Answer

• Verify that the symbol you choose has a clear temperature/thermometer clue, not a nozzle, arrow, or sign shape. • Double‑check that the symbol is not a sprinkler head (water spray) or a general alarm/indicator symbol. • Confirm that the chosen symbol appears in the context of fire detection devices on the plan, not in the section with signs, arrows, or safety equipment like hooks or suits.