Smoke detectors can't be installed in an area that has a temperature:

• A. Either too hot or too cold
• B. Too hot
• C. Normal temperature
• D. Too cold

Answer: (A)

Smoke detectors are designed to operate within a normal indoor temperature range. If the ambient temperature is outside that range—too hot or too cold—the sensors can become unreliable or fail to respond when smoke is present. High temperatures can accelerate aging and cause nuisance alarms or battery wear, while cold temperatures can reduce battery performance and slow detector response. Because of these risks, an area with temperatures either too hot or too cold is unsuitable for installation. Thus, the choice that notes either extreme is the best answer.