This is a piezoelectric disk which is used to pickup sound from musical instruments and devices. This is made up of selected copper which ensures excellent conductivity and long lasting use. As it gives out analog output you can connect the output to comparator circuit to give out digital output of you can connect an ADC to directly connect to the microcontroller you are using. It can be easily installed and suitable for many kinds of instrument like acoustic guitars, drums as it is small in size and reliable enough to handle any rough use too.
 
Piezo Sensor Specifications
Color: Golden
Size: Approx. 35 x 35 x 0.5mm
Material: Copper and ceramic
Resonant impedance: max. 300 Ω
Static capacitance: 50000pF±30 percent
Resonant frequency: 1.8±0.3kHz
 
Package Contents
1× Piezoelectric Sensor