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Mallory Sonalert Products Inc. Part # PMOF-9745W-42UQ Sales Outline Drawing Revision B 4411 South High School Road, Indianapolis, Indiana 46241 USA ● Phone (317) 612-1000 ● Fax (317) 612-1010 ● http://www.mallory-sonalert.com Specifications: Sensitivity Range -42 ± 3 dB RL = 2.2 k Vcc = 3.0v (1 kHz 0 dB = 1 v/Pa) Impedance Max. 2.2k 1 kHz (RL = 2.2 k) Frequency 20 - 16000 Hz Current Consumption Max 0.5 mA Operating Voltage Range 1.1 – 10 V Max SPL (dB) 115 dB S/N Ration More than 60 dB Sensitivity Reduction 3.0 –2.0V Variation less than 3 dB Storage Condition -40 ~ +70°C; R.H. < 90% Operating Condition -20 ~ +60°C; R.H. < 90% Weight (g) 0.6 Options For other options contact factory Dimensions: ( u n i t s : m m ) ROHS Compliant Schematic Diagram: MIC，CASE ECM unit FET Terminal 2 Terminal 1 SdB IμA Vs