Sound Level Meter (330-2055) Specifications Faxback Doc. # 8720 Battery...................................9-Volt Alkaline (cat. No. 23-553) Microphone...............................................Electret Condenser Range.......................................................50 dB to 128 dB Accuracy..............................................+/-2 dB at 114 dB SPL Reference...........................................0 dB - 0.0002 Micro Bar Weighting...........................................................A and C Display Response..............................................Fast and Slow Signal Output: Voltage...............................................1 Volt Peak-Peak Min. ..................................................(Open Circuit, Full Scale ................................................ at 1 kHz),0.5 V p.p.Output .........................................(Input: Mic Out, Output: 10 Kohm) Operating Temperature.....................................32 o F to 122 o F Storage Temperature......................................-40 o F to 149 o F Dimensions (H x W x D).........................6 1/4 x 2 1/2 x 1 3/4 Inches Weight...............................................5.8 oz (165 g Approx.) (smc-03/04/94)