Piezo Audio Indicator KPI-2210L series Piezo Buzzer DIMENSIONS 23 Model No Rated Voltage Operating Voltage Max. Rated Current Min. Sound Pressure Level Resonant Frequency Tone Nature Operating Temperature Weight KPI-2210L 12VDC 3~30VDC 15mA at 12VDC 85dB at 12VDC/30cm 4.5¡À0.5KHz Continuous -20~+80¡æ 6g KPI-2210L-06 6VDC 4~8VDC 15mA at 6VDC 85dB at 6VDC/30cm 4.8¡À0.5KHz Continuous -20~+80¡æ 6g KPI-2210-24 24VDC 18~30VDC 20mA at 24VDC 85dB at 24VDC/30cm 4.8¡À0.5KHz Continuous -20~+80¡æ 6g .