Extech 407730 is a handheld digital sound level meter used to measure environmental and industrial noise levels. It is suitable for workplace safety inspections, machinery noise testing, HVAC systems, factories, construction sites, schools, and environmental monitoring.
Measurement Range: 40 to 130 dB
Accuracy: ±2 dB
Frequency Weighting: A and C
Time Weighting: Fast (125 ms) and Slow (1 s)
Display: Large LCD with bar graph