During preflight inspection, what aural chime should be heard when the ATTND button is pressed on the ERJ 175?

When the ATTND button is pressed on the ERJ 175 during preflight inspection, one hi/lo chime should be heard. This sound serves as an alert to the cabin crew that the system is functioning properly and acknowledges the action taken by pressing the ATTND button. The hi/lo chime is distinct and designed to ensure that the cabin crew is aware of any important communication or activation of communication systems within the aircraft. This auditory cue is essential in maintaining communication among the crew during flight operations, reflecting the importance of preparation and readiness before the aircraft departs.