*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)

Packing:

20PCS, 67*46*31CM, 17.5KG