What is an appropriate decibel level for a bed shaker alarm to be effective?

A bed shaker alarm is designed to alert individuals who may not respond to auditory alarms due to hearing impairment or deep sleep. To be effective, it needs to create enough vibration to physically wake or alert the person.

A decibel level of 75 dB is typically considered effective for this purpose because it is loud enough to ensure the vibrations transmitted through the bed are sufficient to wake someone who might otherwise not respond to sound alone. This level strikes a balance between being effective without causing discomfort or harm to the individual or disrupting others in the vicinity.

Lower levels, like 50 dB, may not have enough power to effectively wake someone from sleep, while higher levels approaching 90 dB or 110 dB could be excessive, potentially causing hearing damage or unnecessary alarm in sleeping environments. Therefore, the 75 dB level is optimal for maximizing alertness while maintaining safety and comfort.