Complaint
Measurement Range:30--130dB
Accuracy:+-2dB
Resolution:0.1dB
Sample rate : 4 times/s , 1 times/s
RS232 interface
Data store function
Data hold
Back light
Low power indication
Date and time display
Auto/Manual range selection
Fast/Slow response selectable
MAX value hold function
Battary voltage : 6 x 1.5V (AAA)
