beeper

This term is primarily associated with the era of paging systems before the ubiquity of mobile phones. While it refers to the physical device, it often carries a nostalgic or professional connotation, specifically evoking the high-pressure environment of medical practitioners or emergency responders who required instant notification.

In modern technical contexts, the word has shifted from describing a standalone communication device to describing a specific hardware component, such as a piezo buzzer or an integrated circuit that emits a signal. In these cases, it is a neutral, descriptive term for any electronic sound-maker used for alerts.