From: Optimizing smoke alarm signals: Testing the effectiveness of children’s smoke alarms for sleeping adults
Type of Alarm
Median Time-to-Awaken (seconds)
Median Time-to-Escape (seconds)
Childrena
Adults
Female Voice
4.0
1.0
24.0
9.0
Low-Frequency Tone
41.5
10.0
High-Frequency Tone
> 300.0
2.0
12.0