Digital sound level meter With USB software noise meter

 Good plan can be used for noise engineering，Quality control，Health prevention and various environmental noise monitoring， etc.Such as: engineering， schools， hospitals， shopping malls， cinemas， theaters， office， road traffic， family， acoustics various occasions volume measurement applications.

    Our products are high precision instrument，Measurement precision can reach + 2dB.Conform to the international committee IEC651 TYPE2 and the American national standards ANSIS1.4 TYPE2.

Product features:

    Wide measuring range 40--130dB.

    With fast/slow reaction rate of choice. 

    Has the maximum locking function.

    With AC analog signal output.

Technical specifications:

     LCD size: 30x50mm.

    The microphone: 1/2 inch capacitor microphone.

     Accuracy 2dB (plus or minus in reference: the sound pressure position accurate， 94dB @ 1kHz).

     Frequency response: 31.5 Hz - 8.5 kHz.

     Dynamic range: 30dB.

     Measuring scope: 40 ~130dBA， 40 ~ 130dBC.

     Frequency weighted properties: A and C characteristics.

     Digital display: 4 digits，  Resolution 0.1 dB， Sampling rate 2 times per second.

     Analog scale display: a representative 1dB scale， Sampling rate 2 times per second.

     Power supply: 6F22 9V battery 1 only or DC 9V 100mA DC power.

     Working environment: 0-40 C (32 F - 104 F)， 10-70% RH .

     Shape dimension: 235x70x30mm.

     Weight: about 350g，   color: orange.

     This instrument standard accessories: A windbreak ball，A TDJ-814，A battery (aviation parts cannot express)，a USB line， a manual，a software CD，a Warranty card.

For aviation security reasons， this product delivery without battery