5pcs DC 3-24V Buzzer Alarm Continuous Sounder SFM-20B 2312 Active Piezo Buzzer Buzzerphone Beep Tone Speaker Alarm

5pcs DC 3-24V Buzzer Alarm Continuous Sounder SFM-20B 2312 Active Piezo Buzzer Buzzerphone Beep Tone Speaker Alarm

AliExpress