Professional sound level meter Wide measurement range: 30-130 dBA, fast response. Super PrecisionThe Decibel Display comes with a sponge ball (windscreen) to ensure the accuracy of test data within a certain wind speed range and can play a role protector for sound level meter. The sound level measurement performance is stable and reliable. Clear LCD display Precision pulse sound level meter Backlit LCD display, clear reading, easy to operate at night. It has Min./Max./Data Hold function and OVER warning signal for off-road measurement. Portable sound level meter: small and easy to use, suitable for sound quality control in children's rooms, offices, homes, schools and construction sites, etc. Sound level meter Feature: Wide range measurement: 30-130 dBA, fast response. Min./Max./Data Hold function and OVER warning flag for over-range measurements. Low battery indicator, manual shutdown /automatic. Feature Frequency weighting function: A weighting Display: LCD screen Food: 3 AAA 1.5V batteries (included) Operating environment: 0-40 10-80% RH Storage environment: -10-60 0-90%RH Item Size: 56*36*177mm/2.20*1.42*6.97in Item Weight: 122g / 4.32oz (battery included) Specification: Color: Black Material: ABS plastic Measuring range: 30-130dBA Accuracy: 1.5dB Resolution: 0.1 dB Frequency response: 31.5Hz to 8KHz " test data accuracy within a determined wind speed range and can play a protective role for sound level meter. The sound level measurement performance is stable and reliable.Transparent LCD display Precision pulse sound level meter Backlit LCD display, clear reading, easy to operate at night. It has Min./Max./Data Hold function and OVER warning signal for off-road measurement.Portable sound level meter: small and easy to use, suitable for sound quality monitoring in children's rooms, offices, homes, schools and construction sites, etc. sound level meter feature: Wide measuring range: 30-130 dBA, fast response. Min./Max./Data Hold function and OVER warning flag for over-range measurements. Low battery indicator, manual/automatic shutdown. Feature Frequency weighting function: A weighting Display: LCD display Power: 3 AAA 1.5V batteries (included) Operating environment: 0-40 10-80% RH Storage environment: -10-60 0-90%RH Item Size: 56*36*177mm/2.20*1.42*6.97in Item Weight: 122g / 4.32oz (battery included) Specification: Color: Black Material: ABS plastic Measuring range: 30-130dBA Accuracy: 1.5dB Resolution: 0.1 dB Frequency response: 31.5Hz to 8KHz