Material: ABS Digital display: 4 digitsMeasuring Range: 30～130dBAResolution: 0.1dBAccuracy: ±1.5dB (under reference conditions)Frequency Range: 31.5Hz to 8.5HzFrequency Weighting: A WeightingData hold: Maximum and Minimum holdSampling Rate: 2times/sTemperature Measuring Range:-10°C-50°C/14°F-122°F Accuracy: ±2°CResolution: 0.1°CPower Supply: 3 * AAA Batteries (Not Included)Operating Temperature: 0～40℃ (10%～80%RH)Storage Temperature: -10～60℃ (10%～70%RH)Red back light alarm and sound alarm function.Wide measurement range from 30dB to 130dBA.Data hold function, maximum and minimum value measurement.LCD display with backlight, convenient to use at night.Low battery indication, automatic & manual power off function.Compact and light, convenient to hold and carry.Equipped with sponge ball for sensor protection.Applications includes: Environmental measurement, law enforcement, work place design, sound level analysis of machinery and engines.Packing: 1*Decibel TesterNote:1. Please Allow 1-3cm Differs Due To Manual Measurement.2. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.Please refer to the received product. Thank you for your understanding.Portable and easy to use.