The new Legislation applies to the average weighted noise experienced over a working shift, typically 8 hours.
In its automatic mode, Eustachio works by continually measuring the sound levels being output to the headset during the working day and the sophisticated electronics automatically reduce or increase audio levels to ensure a safe limit is maintained until the end of the shift. In fact Eustachio also provides protection from very low sound levels by automatically increasing low sound levels to avoid the strain of trying to hear conversations that are too quiet. In Manual mode, users are able to adjust the listening volume. In this case Eustachio continues to measure and monitor the headset sound level, providing the user with the information needed to work within the safety limit: its display shows real time noise exposure value and the time remaining until the day?s exposure limit is reached.