There are three main buzzer, divided into: electromagnetic reed type, electromagnetic diaphragm type and piezoelectric buzzer.

Electromagnetic reed type: According to the structure of the use of DC or AC, and through the reeds vibration generated bees like sound.

Electromagnetic diaphragm type: There are two main active and passive, passive and loudspeaker is basically no difference, but the active is based on the passive increase in built-in oscillator circuit to start sounding.

Piezoelectric buzzer: Pieces of metal sandwiched between two piezoelectric materials can be converted into vibration current, vibration can also be converted into current.

According to the use can clearly know the difference between them:

Buzzer use: telephone, medical equipment, clocks, digital products, toys, appliances and so on.

Speaker use: digital products, laptops, home appliances.

In the application range can be clearly seen on the difference between them.