Sound Level Meter 2 30 to 130 dB dB Range Frequency Range 20 Hz to 8 kHz A and C Frequency Weighting Accuracy +/-1.4 dB Resolution 0.1 dB Display 4 Digit LCD 64 000 Counts 500 ms Response Time USB Interface Microphone Type Electret Condenser Microphone Size 1/2 in Standards CE RoHS Criteria Levels 110 dB 130 dB 30 dB 50 dB 70 dB 90 dB Records Up To 64 000 Data Points Operating Temp Range 0 Degrees to 40 Degrees C Built-In Data Points Output Jack Yes (4) AAA Battery Type