The piezoelectric buzzer generates mechanical deformation of piezoelectric ceramic plates by reverse piezoelectric effect, which induces the vibration of vibrators and forms sound wave in the air. This one-piece electronic sound device is widely applied in automotive electronics, security alarming, etc.
-Small size, easy to install
-Stable performance
| Model | QJ0811 | 
| Sound pressure level | 85dB(9VDC/300cm) | 
| Frequency | 3.2±0.3KHz | 
| Resonant impedance | 500ΩMAX | 
| Operating temperature | -20℃ ~ +70℃ | 
- Smoke alarm detector
- Sound wave detacher