This is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces.

This is not a true piezoelectric speaker but behaves similarly. Instead of a piezoelectric crystal that vibrates with an electric current, this tiny speaker uses an electromagnet to drive a thin metal sheet. That means you need to use some form of alternating current to get sound. The good news is that this speaker is tuned to respond best with a square wave (e.g. from a microcontroller).

Technical Details

• Sound-making Type : Continuous Sound;
• Rated Voltage : DC 5V
• OPERATING VOLTAGE: DC 4~7V
• Body Size(Terminal not included) : 12 x 9.5mm / 0.47″x 0.37″(D*T);
• Terminal Pitch : 7.6mm / 0.29″;
• Sound Output : ≥85dB
• External Material : Plastic;
• Frequency : 2300+/-300Hz
• Current: : 30mA;
• Operating Temperature:  -20~+85℃