Nơi xuất xứ
Shandong, China
Measuring range
30~130dBA; 35~130dBC
Precision
±1.5dB (reference tone standard, 94dB@1kHz)
Measuring gear
30~130dB; 30~80dB; 50~100dB; 80~130dB
Response frequency
31.5Hz~8.5kHz
Sampling frequency
2 per second
Frequency weighted characteristics
A and C rights