5PCS Buzzer Passivo SMD Allarme Piezoelettrico 5x5x2MM Ultrasottile Mini Buzzer
●Passive Piezoelectric Buzzer. ●Acoustic piezoelectric frequency: ≤78dB. 5Pcs x Buzzer. We'll provide you a satisfying solution. We will try our best to avoid any quality problem. ●Frequency: 4000HZ.