What is the required audible indication level for master alarms?

The correct choice reflects the standard requirement for master alarms in healthcare settings, which is set to ensure they are effectively heard in a variety of environments, including those with higher ambient noise levels. A level of 80 dBA is intended to provide a clear audible alert that can easily capture the attention of staff, even when background noise from medical equipment, conversations, or other activities is present. This failsafe is crucial in emergency situations where immediate response can impact patient care and safety.

The rationale behind choosing this specific level is that it strikes a balance between being loud enough to be noticed without causing undue disturbance to the environment or discomfort to patients. Adhering to this standard helps ensure that alarms are not only audible but also effective in prompting timely action by healthcare providers when a critical situation arises.