Universal Noise Dosimeter Kit Low 50 to 100 dB/High 80 to 130 dB dB Range Frequency Range 20 Hz to 8 kHz A Frequency Weighting Accuracy +/-1 dB Resolution 0.1 dB Display 4 Digit LCD Slow Response Time RS-232 Interface Criteria Levels 70 dB 80 dB 84 dB 85 dB 90 dB Records Up To 31 Hours at 1 Minute Intervals Threshold Level 50 to 99 dB