Noun
an electronic device that generates a series of beeps when the person carrying it is being paged
Source: WordNetI worked in sales years ago and half my day was spent responding to The Beeper, then trying to find a pay phone that actually worked, hoping I would catch my customer, but not some skin disease. Source: Internet
The ringer, or beeper, light or other device (A7), alerts the user to incoming calls. Source: Internet
Desperation drove me to an extremist web-page called "Microwave Beeper Silencer Hack". Source: Internet
The insulin pump is about the size of a beeper. Source: Internet