A buzzer is an electronic audio device that can produce various sounds to complete functions such as warning, reminder, and other multiple purposes. There are two main types of buzzers: passive and active. Passive buzzers are driven by a crystal oscillator and produce specific sounds through external control, while active buzzers are controlled by an external signal and can achieve a louder sound.

There are many characteristics of buzzers. Firstly, electromagnetic buzzers, which are a type of passive buzzer, require low voltage to achieve multiple sound variations. Secondly, they are very small and easy to install and carry. Finally, they can control large sound sources, quantify more parameters, and achieve more precise control.

Changzhou Shenghui Electronic Co.,LTD is a manufacturer of buzzers, which was founded in 1996 as an audio component manufacturer. After more than a decade of development, we now have abundant knowledge and experience in designing and manufacturing buzzers. Our buzzers are widely used in household appliances, alarm systems, industrial equipment, medical care, and security fields.