APM-TEC Diameter (mm) Height (mm) Voltage (VDC) Operating voltage (VDC) Resonance Frequency (Hz) *Minimum Sound Pressure Level  (dBA) Tone Housing material Termination
APM-PB4224P 42 20,5 24 1 – 28 2,900 ± 500 85dB at 25cm Continuous ABS PLATE