Specifications:
Microphone: Φ0.5 inch (12.7 mm) (1/2 inch) Test Condenser Mic Frequency Equalization : A, C and Linear (Linear Shape) Range: 25dB - 130dB (A) Range Control: Manual, 3 gear, linear range > 60dB test range
30 dB - 90 dB (dynamic scale display 10 dB - 100 dB)
50dB - 110dB (dynamic scale display 30dB - 120dB)
70dB - 130dB (dynamic scale indication: 50dB - 140dB)
Accuracy: IEC61672 standard, Class 2 Compliance Time Weighting: High Speed (F), Slow Speed (S), Impulse (I) Filter: Built-in 1/1 and 1/3 octave filter; Large Screen Dynamic LCD, Instant Sound Level, with Analog Ammeter Display.Output Interface
AC signal output
USB data cable output
Calibration: Uses class 1 sound level calibrator; Power supply: 4 x 1.5 V AAA size (UM-4) battery (batteries are not included in shipping); External power: 6 V; Weight: 6.5 oz (185 g) (not including batteries); Dimensions: 9.0 x 2.5 x 10 inches (227 x 63 x 26 mm); Operating conditions: Temperature: -10 mm).