2pc 5v-20v Small Piezoelectric Active Buzzer Beeper Alarm

The piezo buzzer works on the principle of the piezoelectric effect and produces sound based on the reverse of the piezoelectric effect. the electric potentials difference across piezo material is a reason to generate pressure variations. Piezo buzzer is most famous among other types of buzzers because of the higher sound generation using less current. Other names of buzzers are an audio alarm, beepers, audio indicator, audio transducer, audible alarm.

Specification

• Operating voltage: 4v to 8v
• Rated voltage: 6v
• Rated current: 25mA
• Operating current: ≤30mA
• Oscillator frequency: 3.2kHz
• Sound level: ≥85dB
• Sound tone: continuous