4.2.6.3-11 Manual Disable/Adjustment of Signal Intensity

Manual disable or adjustment of auditory signal intensity (loudness) should be avoided.

Additional Information:
The need to adjust auditory signal level can be alleviated by improved signal design and level selection. If signal level is adjustable, it should be controlled by administrative procedure. Under no circumstances should users be able to disable audio alarm signals or reduce their level so as to render them inaudible.