Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer.
| Datasheets | Piezoelectric Sound Components |
|---|---|
| Frequency | 6.3 kHz |
| Impedance | 1 kOhm |
| Capacitance @ Frequency | 10000 pF @ 1 kHz |
| Size | 0.79" Dia (20 mm) |
