What is the sound level that a smoke detector typically reaches at 10 feet?

A smoke detector typically emits a sound level of around 85 decibels when measured at a distance of 10 feet. This sound level is designed to be sufficiently loud to alert individuals in a residential or commercial environment, ensuring that people can hear the alarm even if they are asleep or in another part of the building. The standard for smoke alarms set by various safety organizations generally mandates a minimum sound level of 85 decibels at 10 feet.

While the other levels listed might seem plausible, 75 decibels would be too quiet to effectively wake someone up or alert them to danger, especially in noisy environments. Levels of 95 and 105 decibels are considerably above what is necessary for a typical smoke detector and may cause hearing damage with prolonged exposure. Therefore, 85 decibels is the correct choice, as it balances the need for effective audibility without unnecessary risk of harm from excessive sound.