扬声器与变频器 buzzer, 31.4 mm round, 16 mm deep, P, 3.3 kHz, 3~28 V, pins, no driving circuit
压电式（带反馈） 传感器，外部驱动 7mA 3.3kHz 81dB @ 12V，30cm 通孔 PC 引脚
得捷:
BUZZER PIEZO 12V 31.4MM TH
贸泽:
扬声器与变频器 buzzer, 31.4 mm round, 16 mm deep, P, 3.3 kHz, 3~28 V, pins, no driving circuit
艾睿:
Audio Indicator Element