Buzzers are small devices that produce a buzzing sound when activated. They are commonly used in various applications, such as alarms, doorbells, and electronic games. Buzzers can be powered by batteries or connected to a power source, and they come in different sizes and shapes, depending on their intended use. There are two main types of buzzers: active buzzers and passive buzzers. Active buzzers generate sound on their own when electricity is applied, while passive buzzers require an external audio signal to produce sound. Both types are widely used in consumer electronics, educational tools, and industrial equipment.