Piezo Buzzer

A piezo buzzer is an electronic component that produces a beeping or buzzing sound when an electrical voltage is applied to it. It works using the piezoelectric effect, where a special material vibrates when an electric signal passes through it, creating sound. Piezo buzzers are commonly used in alarms, timers, security systems, Arduino projects, electronic games, and warning systems. They are small, lightweight, inexpensive, and require very little power.