Sound pressure level output, measured 10 cm from PKMCS0909E4000-R1, is >65 dB when driven with ±1.5 V, 4 kHz square wave. Max peak-to-peak voltage is ±12.5 V, and power consumption is 0.6 mW typ. Latter helps preserve battery life in consumer electronic devices. Measuring 9 x 9 x 1.7 mm and weighing 160 mg, sounder does not use any magnets or coils to create sound. This eliminates generation of electrical noise and minimizes impact on surrounding circuitry.
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