The humble piezo disc buzzer is much more than something that makes tinny beeps in retro electronic equipment, it can also be used as a sensor. Tapping a piezo buzzer gives an interesting waveform, ...

Introduced as the industry's smallest piezo buzzer with an IP67 rating, the CPE-243 is designed for a range of waterproof and dustproof applications such as transportation, home appliance, and diving ...