Self-driven Piezo Transducer KPT3-2330 series Piezo Transducer DIMENSIONS 18 Bottom View CIRCUIT OF TEST Side View Model No Rated Voltage Operating Voltage Max. Rated Current Min. Sound Pressure Level Resonant Frequency Tone Nature Operating Temperature Weight Value applying at rated voltage KPT3-2330 30VDC 3~40VDC 25mA at 30VDC 75dB at 30VDC / 1m 4.0¡À0.5 KHz Continuous -20~+70¡æ 2g color White PBT Housing Material Pin Terminal all dimensions are in mm KPT3-2438 series Piezo Trans.