Which type of tone is typically used for alert notifications in security systems?

The correct answer is a high-pitched tone. This type of tone is often chosen for alert notifications within security systems due to its ability to quickly capture attention and alert individuals to potential dangers or abnormalities. High-pitched sounds are generally more penetrating and can be heard over background noise, making them effective for drawing immediate attention in critical situations, like alarms or emergency alerts.

In security contexts, a clear and distinct tone is necessary to ensure that individuals are aware and can react promptly to threats or emergencies. A melodic tone, while pleasant, may not provide the urgency needed to alert users effectively. A low-volume tone might not be loud enough to be heard, especially in environments with competing noise levels. A continuous tone might not convey urgency as effectively as a high-pitched alert, which can signal immediate action or attention.