Feactures:
AC/DC Output
Auto Power Shut Off
Low Battery Indication
Over Range Indication
Max Hold Function
USB PC Interface
Calendar function

Specifications:
Measuring Range: 30-130dBA, 35-130dBA
Accuracy: ±1.5dB  
Frequency Range: 31.5Hz~8.5KHz
Linearity Range: 50dB
Digit & resolution: 4 Digits & 0.1dB
Time weighting selection: Fast/Slow
Microphone: 1/2 Inch Electret Condenser
Frequency weighting: A & C
Sampling Frequency: 2 times/sec
LCD size: 30*50mm
Color: Ivory
Product Net Weight: 350g(include battery)
Product Size: 235x70x30mm
Power: 9V(Alkaline or DC Adapter)
Operating Temperature and Humidity:   0  °C  to 40°C (32°F to 104 °F)