Smoke alarms installed in areas with varying temperatures above 100°F must meet what type of requirement?

Smoke alarms installed in areas with temperatures exceeding 100°F must meet temperature compensation requirements to ensure optimal performance and reliability. High temperatures can affect the sensitivity of smoke alarms, potentially leading to false alarms or failure to activate in the presence of smoke. Temperature compensation allows the smoke alarm to adjust its sensitivity based on the ambient temperature, ensuring it operates effectively despite environmental conditions.

In environments where excessive heat is commonplace, standard smoke alarms might be unreliable. By meeting temperature compensation requirements, these alarms can maintain their effectiveness and ensure timely alerts during a fire emergency, even in warmer climates or during heat spikes.

The other options, while relevant to different aspects of smoke alarm functionality, do not specifically address the challenges posed by high temperatures. Battery backup is essential for ensuring operation during power outages, humidity resistance addresses moisture-related issues, and a continuous power supply ensures constant operation but does not account for temperature impacts on the alarm's performance.