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30V Diameter 30mm PIEZO SOUNDER BUZZER LS-3040TA-90L transducer Contact with us: yxl(at)duoxin(dot)com Resonant Frequency (KHz) 4.5 ±0.5 Operating Voltage (Vp-p/max) 30 Rated Voltage (Vp-p) 5.0 ...