KY-012 Active Buzzer Module Alarm Sensor for Arduino DIY Kit
ab 1,11 €
Buzzer classification: It is mainly divided into two types: piezoelectric buzzer and electromagnetic buzzer. Piezoelectric buzzer: Piezoelectric buzzer is mainly composed of a multivibrator, a piezoelectric buzzer sheet, an impedance matcher, a resonance box, a shell, etc.
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