IC: SPLC780D(Diameter 16mm) ??? 1. Nominal frequency (KHz): 40KHz ??? 2, launch sound pressure 10V (0dB = 0.02mPa): ≥ 117dB ??? 3. Receiving sensitivity at 40KHz (0dB = V / ubar): ≥-65dB ??? 4. Capacitance at 1KHz, <1V (PF): 2000 ± 30%
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