Galaxy Audio CM130

The affordable CM130 Sound Pressure Level (SPL) meter from Galaxy Audio will allow you to quickly check dB levels. Microphone: 1/2″ Electret condenser microphone Accuracy: 2 dB ( under reference conditions 94dB @1KHz ) Level Range: 1 = 40 ~ 70 dB 2 = 60 ~ 90 dB 3 = 80 ~ 110 dB 4 = 100 ~ 130 dB Frequency Weighting: A , C Time Weighting: Fast , Slow Dynamic Range: 30 dB Frequency Range: 125 Hz to 8 KHz Dimensions: 9.1″x2.1″x1.3″ Battery Life: 9V Battery 110 hours (included) Weight: Approx. 0.37lbs. (170g)(including battery)Also see the more advanced CM140 and CM150 models.