KY-012 3 Pin Active Buzzer Alarm Sensor Module

Active Buzzer Module KY-012 Arduino module, it produces a single-tone sound when signal is high. To produce different tones use the KY-006 Passive Buzzer module.

The KY-012 Active Buzzer module consists of an active piezoelectric buzzer, it generates a sound of aproximately 2.5kHz when signal is high.