Active buzzer module on a PCB with 3 pins with a pin pitch of 2.54 mm. The KY-012 module consists of an active piezoelectric buzzer with a generator that generates a sound with a frequency of about 2.5 kHz when the input level is high, with an operating current <25 mA. The buzzer module is perfect for mounting in your own DIY and Arduino projects. Technical data Working voltage: 3.3-5V Working current: <25mA Resonant frequency: 2500 Hz ± 300 Hz PCB dimensions: 19 x 16 x 11 mm https://elecena.pl/product/22621188/active-buzzer-module-with-generator-3-5v-5v-ky-012-for-arduino 2023-02-23 https://elecena.pl/product/22621188/active-buzzer-module-with-generator-3-5v-5v-ky-012-for-arduino 2025-10-29