BUZZER PIEZO 12V 30MM RADIAL
压电式（带反馈） 传感器，外部驱动 12 V 8mA 3.5kHz 90dB @ 12V，30cm 通孔 PC 引脚
得捷:
BUZZER PIEZO 12V 30MM TH
艾睿:
Audio Indicator Piezo 3VDC 28VDC 8mA 12VDC 90dBA 3000Hz to 4000Hz Through Hole Pin Bulk
Allied Electronics:
PULSE TONE IND-PIN-FAST ROHS