Measuring level
30~70dB, 60~90dB, 80~110dB, 100~130dB
Frequency weighting
A/C/Z weighting
Frequency response
31.5Hz~8kHz
Display
4 digits, max 1999
Power Supply
1.5V AAA battery or USB micro interface 5V
Accuracy
±1.5dB (sound pressure reference, 94dB@1KHz)
Ambient temperature accuracy
±2°C
Ambient temperature range
0~60°C
Over range
"OVER~HI", "UNDER~LO"