Piezoelectric buzzer is divided into two types of excitation and self excitation, these 2 kinds of buzzer, the main attention of these 2 piezoelectric buzzer is as follows:

Piezoelectric buzzer buzzer buzzer and self excitation buzzer also need to pay attention to include:

1, do not touch the components with bare hands, so as to avoid the buzzer electrode corrosion.

2, pay attention to the protection of the circuit from stress action, fall, vibration, temperature changes caused by surge voltage damage.

3, if the buzzer DC voltage, charge transfer may occur, please do not be used for a long time under DC voltage components.

4, avoid excessive pull wire, otherwise it will lead to broken wire or solder joints off.