PIEZO SOUND GENERATORS Dimension Unit : mm Tolerance : ±0.3mm 8.0 Ø28.0 33.5 39.5 HPA28BX 4.0 Ø18.0 6.0 Sound Port Characteristics Response 3.0 25.0 Measuring Temperature : 25°C Measuring Distance : 30cm mA JL World dB 90 15 85 10 5 80 6 8 10 12 14 16 18 V 6 8 10 12 14 16 18 V HPA28AX Specification (all data taken at 25°C unless otherwise specified) Rated Operating HRated HSound Output HGenerated Current Voltage Voltage at 30cm Frequency (mA) (dB) (VDC) (VDC) (Hz) 12 4 ~ 28 £ 15 ³ 85 3500 ± 500 Operating Temperature (°C) Storage Temperature (°C) Weight (g) -20 ~ +70 -30 ~ +70 15 HValue Applying Rated Voltage, DC www.jlworld.com