1/2" electret condenser microphone for high accuracy and longterm stability
Internal 94dB calibration
Data Hold, Max Hold and low battery indication
AC output signal for use with dataloggers
Includes hard carrying case and two 9V batteries
Specifications: Range: 30 to 130 dB (A & C) Resolution: 0.1 dB Accuracy: ±1.5 dB Frequency: 31.5 Hz to 8 kHz Time Weighting: Fast/Slow (A & C) Power Supply: 2 x 9V batteries Dimensions: 10.2 x 3.4 x 1.4" (260 x 87 x 36mm) Weight: 16 oz (450g)