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Amazon.com: Stemedu 6PCS Active Buzzer SFM-20B Electric Piezo Alarm Ringer DC3-24V Continuous Beep Sound 95dB High Decibel Siren Buzzers Speaker for Ar duino : Electronics
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Useful Durable 3-24V Piezo Electronic Buzzer Alarm 95DB Continuous Sound Beeper for Car Van: Amazon.com: Industrial & Scientific