The term 'microwave beeper' refers to a TIMER, which is a device used to measure the passage of time. It can be used to alert a person when a certain amount of time has passed. The TIMER can be set to sound an alarm or buzzer when the desired time has elapsed. This is especially useful for tasks that require precise timing, such as cooking in a microwave oven. The TIMER can also be used to remind people to take breaks or to complete tasks on time.