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The KY-012 Active Buzzer module produces a single-tone sound when it receives a high signal.
Compatible with popular microcontrolers like Arduino, Raspberry Pi and ESP32.
This module consists of an active piezoelectric buzzer and 3 male header pins. It generates a sound of aproximately 2.5kHz when the signal is high.
| Operating Voltage | 3.5V ~ 5.5V |
| Maximum Current | 30mA / 5VDC |
| Resonance Frequency | 2500Hz ± 300Hz |
| Minimum Sound Output | 85Db @ 10cm |
| Working Temperature | -20°C ~ 70°C [-4°F ~ 158°F] |
| Storage Temperature | -30°C ~ 105°C [-22°F ~ 221°F] |
| Board Dimensions | 18.5mm x 15mm [0.728in x 0.591in] |
CONNECTION DIAGRAM
Connect signal (S) to pin 8 on the Arduino and Ground (-) to GND. The middle pin is not used.
Some boards migh have different pin arrangement, please check your connections before using this module.
| KY-012 | Arduino |
|---|---|
| S | Pin 8 |
| middle | |
| – | GND |
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