Audio 30VDC/30VAC 120VDC/120VAC 6mA 65dBA 2400Hz to 3400Hz Screw Panel Mount
压电 蜂鸣器 指示灯，内部驱动 1 ~ 6mA 2.9kHz 55dB @ 30V，61cm 面板安装 螺纹端子，快速连接片 - 0.250"（6.35mm）
得捷:
BUZZER PIEZO 42.85MM PNL MNT
艾睿:
Audio Indicator Piezo 30VDC/30VAC 120VDC/120VAC 6mA 65dBA 2400Hz to 3400Hz Panel Mount Screw Bulk
Allied Electronics:
Alarm; 30 to 120; 55/68 dBA @ 2 ft. and30 VAC/DC; Panel Mount; Black;
Electro Sonic:
Audio 30VDC/30VAC 120VDC/120VAC 6mA 55dBA 2400Hz to 3400Hz Screw Panel Mount