1. Because there is no movable contact part, it has long service life, high reliability, and can be used continuously for more than 10000 hours. It is a semi permanent device.
2. No flashover or radio frequency noise, and no interference to other lines.
3. It will not cause large vibration due to looseness.
4. It is controlled by electronic circuit, so it can produce a variety of pleasant sounds, analog sounds, intermittent sounds, pure timbre, and is not easily covered by noise.
5. Voltage is used for excitation, so the current consumption is small, generally below 20mA, and will not exceed 100mA.
6. Small high volume. The volume can reach 70dB/20cm, while the component thickness is only 1mm or less.
7. Wide operating temperature range.
8. Piezoelectric buzzer is easy to install, and there is no electromagnetic coil and moving coil, so there is no need to worry about insulation deterioration, and there is no possibility of electric leakage.