What sound level is produced during the Pre Alarm?

The sound level produced during the Pre Alarm is indeed 70 decibels. This sound level is specifically designed to alert the user of the SCBA system to an impending low air situation while also being loud enough to ensure the wearer can hear it over the ambient noise typical in emergency environments. A sound level of 70 decibels is considered a safe threshold that allows for effective communication and awareness, minimizing the chances of confusion during critical operations. This characteristic helps maintain the focus of firefighters and other personnel as they manage challenging conditions. It is crucial for SCBA users to recognize this sound signal as it informs them to monitor their air supply more closely, promoting safety and preparedness in potentially hazardous situations.