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A piezoelectric speaker, also called a "piezo" buzzer or beep speaker) is a loudspeaker that uses the piezoelectric effect for generating sound.
Compared to other speaker designs, piezoelectric speakers are relatively easy to drive, typically operating well in the range of 1-5 kHz and up to 100 kHz in ultrasound applications. Kailitech model KDS-38P-20A is an example of ultrasonic piezo speaker for ultrasonic animal repellers. Piezo ultrasonic loudspeakers produce different sound frequencies depending on the animal species to repel.
Model: KDS-38P-20A Brand:KD Dimension:37.8mm*12.5mm SPL:95dB min.at 20kHz Resonant Frequency:4.0 kHz～40.0 kHz
