Ultrasonic Chip 50mm Coil Edge Dual Electrode Piezoelectric Ceramic Buzzer

China Ultrasonic Chip 50mm Coil Edge Dual Electrode Piezoelectric Ceramic Buzzer, Find details about China Piezoelectric Ceramic Buzzer, Buzzer from Ultrasonic Chip 50mm Coil Edge Dual Electrode Piezoelectric Ceramic Buzzer