Audio 4VDC 14VDC 12mA 75dBA 3500Hz to 4300Hz Pin Through Hole
压电 指示灯，内部驱动 3 ~ 12mA 3.9kHz 75dB @ 4V，61cm 通孔 PC 引脚
得捷:
BUZZER PIEZO 23MM TH
MASTER:
Audio 4VDC 14VDC 12mA 75dBA 3500Hz to 4300Hz Pin Through Hole
Electro Sonic:
Audio 4VDC 14VDC 12mA 75dBA 3500Hz to 4300Hz Pin Through Hole