Frequency range:  31.5Hz - 8KHz

Measuring range: (28)30dB -130dB

Frequency Weighting:  A/C

Microphone:  1/2 inch polarization capacitance microphone

Digital Display:  4digit LCD

Resolution: 0.1dB

Display Update:  2 times/sec

Time Weighting:

     FAST      125ms

     SLOW     1 second

Measuring ranges:

     Range 1:  (28)30dB - 70dB

     Range 2:   60dB - 100dB

     Range 3:   90dB - 130dB

Accuracy:  ±1.5dB (reference conditions 94dB@1kHz)

Dynamic range:  40dB

Overflow indicator:   “OVER” will be displayed when over range,

display  “OL” when overflow the upper range more than 5dB.

“UNDER” will be displayed when under range, display “LO”

when under the lower range more than 5dB or under 30dB.

MAX hold:  MAX

Power:   One 9V battery

Battery Life:  Approximately 110 hours

Operation Environment: 0 - 40°C（32 - 104°F）10 - 75%RH

Storage Environment:  -10 - 50°C（14 - 122°F）10 - 90%RH

Dimensions:  185(L)*65(W)*35(H)mm

Weight:  150g (including battery)

Accessories: 9V battery, instruction manual