APM-TEC Diameter (mm) Height (mm) Voltage (VDC) Operating voltage (VDC) Resonance Frequency (Hz) *Minimum Sound Pressure Level  (dBA) Tone Housing material Termination
APM-PB4009P 40 20 9 3 – 20 2,800 ± 500 100dB at 1m Continuous Noryl PIN