This module is a breakout board for an active buzzer. Active buzzers have an internal oscillator which generates a waveform to drive the transducer inside the buzzer. They operate at a preset frequency and are only able to produce a single tone. All you need to do is apply a DC voltage within the operating voltage range of the buzzer and voila, let there be sound.
Features / Specs
- Model: KY-012
- Operating Voltage: 3.5 – 5.5VDC
- Operating Current: 30mA @ 5VDC
- Resonant Frequency: 2.5kHz ±300Hz
- Minimum Sound Output: 85Db @ 10cm
- Operating Temperature: -20°C to +70°C
- Standard 2.54mm Pitch Pin Header
- Connect Ground to the “-” pin, and connect your positive supply to the “S” pin