31.3毫米压电音频指标， 3 - 20 V条， PC安装，启封
31.3mm piezo audio indicator, 3-20V, pc mount, unsealed
24.2毫米压电音频指标， 3 - 20 V条， PC安装，启封
24.2mm piezo audio indicator, 3-20V, pc mount, unsealed
28压电音频指标， 3 - 28 V的，法兰安装，带引线
28mm piezo audio indicator, 3-28V, flange mount with lead wires
50毫米压电音频指标，3 -1 6伏直流电，导致电线，2 .5千赫，安装制表符，体积挡板
50 mm piezo audio indicator, 3 - 16 V dc, lead wires, 2.5 KHz, mounting […]
