SOUND LEVEL METER Fluke 945 Sound Level Meter Fluke 945 Sound Level Meter measurements of environment noise 30 to 130 dB, 0.1 dB resolution, accuracy +/- 1.5 dB. Display with 0.1 dB steps on 4 digit LCD screen & Frequency response from 31.5 Hz to 8 kHz. Specifications 1 / 2 inch condenser microphone 9V battery (about 50 hours time) Operating temperature: 5 oC to 40 oC, relative humidity, "80% Storage temperature: -10 oC to 60 oC, relative humidity "70% Work :0-2000 m above sea level Electrical Standard: IEC 651 2-type; ANSI 1.4 2-type Calibration period: 1 year Size: 200 x 55 x 38 mm Weight: 233 grams (with battery) In the Box Fluke-945 Sound Level Meter One 9 V battery User manual