This unit was designed according to following standards:
----A. International electrician committee standard: IEC PUB 651 TYPE2
----B. US national standard: ANSI S1.4 TYPE2

*Measuring range:
----30~130 dBA

----35~130 dBC
*Accuracy: ±1.5 dB

*Digit & Resolution: 5位& 0.1 dB

*Frequency response: 31.5Hz ~8.5KHz

*Measuring level: 30~130, 40~90, 50~100, 60~110, 80~130

* Frequency weighting characteristic: A & C

* Time weighting: FAST/SLOW

*Sampling rate: 2times/second

*Microphone：1/2 inch polarization capacitance microphone

*AC/DC output

*Max reading

*PWM output

*Calenda

*4700 data store

*USB computer interface

*Analysis software

*Overload indication: OVER / UNDER

*Automatic backlight

*Low battery indication

*Auto power off

*Packing method: PP box + Gift box
*Power: 1.5V AA* 4pcs or DC 6V 100mA adapter
*Dimension: 256*70*35mm
*Weight: 308g (including batteries)

*Standard QTY per export carton: 20PCS

*Standard export carton size: 67*46*31CM

*Standard export carton weight: 20KG

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