Proven to Wake Sleepers Best
The technology used in the Lifetone HL™ Bedside Fire Alarm and Clock worked so well in independent testing that 95% of hearing-impaired participants were awakened by its 85 dB 520Hz square-wave sound pattern. In fact, this alarm pattern was the most effective in the study.
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Study Participants Who Slept Through a High-pitched Alarm at 75 dBA Versus Slept Through a 520 Hz Square-Wave.
| Participants | % slept through 75 dBA | |
|---|---|---|
| High Pitched Current Alarm | 520 Hz Square-wave | |
| Children Aged 6-10 yrs | 43% | 3.5% |
| Deep Sleeping Young Adults | 43% | 7% |
| Older Adults Aged 65+ yrs | 18% | 4.5% |
| Hard of Hearing Adults | 44% | 8% |
| 0.05 BAC Young Adults | 38.5% | 0% |
| Sober Young Adults | 31% | 0% |
To read the complete study results, click here.