12mm Piezo Element Vibration Sensor with Wires, 6.3kHz
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Prices updated: 12 Oct 2026
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About this product
A 12mm piezoelectric disc with attached wires that generates a voltage when struck or vibrated, making it useful as a knock or tap sensor. The listing also notes it can serve as a small audio transducer such as a buzzer. Its resonant frequency is 6.3kHz ±0.6kHz with a capacitance of 10nF ±30% at 1kHz.
Specifications
- Diameter
- 12 mm / 12 ملم
- Resonant frequency
- 6.3 kHz ±0.6 kHz / 6.3 كيلوهرتز ±0.6 كيلوهرتز
- Resonant impedance
- 1000 Ω max / 1000 أوم كحد أقصى
- Capacitance
- 10 nF ±30% (at 1 kHz) / 10 نانوفاراد ±30% (عند 1 كيلوهرتز)
- Leads
- Wired / بأسلاك
Frequently asked questions
How do I read a knock with a microcontroller?
Connect one lead to an analog input and the other to ground, with a high-value resistor (for example 1MΩ) across them. The element produces a voltage spike on impact, which the ADC can read.
Can I use it as a buzzer?
The listing says it can be used as a small audio transducer. It needs an AC drive signal near its 6.3kHz resonant frequency to produce sound, not a steady DC voltage.
