Feature:1. Wide Ranges, High Accurate: The Noise Meter features a high-sensitivity, high-precision condenser microphone, capable of measuring noise levels from 30 to 130 dB, high accuracy of 1.5 dB, frequency from 31.5Hz to 8.5KHz.2. A/C Weighted Measurement: The A weighted simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. The C weighted simulates the frequency properties of high-intensity noises of the human ear, which are suitable for the sound pressure analysis of machine motors and machines. 3. Fast and Slow Measurement: The decibel meter has the function of converting the fast and slow response rate. The fast response rate uses a time constant of 0.125s/time for general environmental measurement. The slow response rate uses a 1s/time constant, which is used for environmental measurements with relatively large changes in noise levels.4. Backlight Display: White LCD backlight display, the reading effect is clearer in dark places. When the battery is low, the LCD display will display a low voltage icon, indicating that the power is low at this point and the battery needs to be replaced.5. Widely Application: This audio noise measure device is a great tool for checking, monitoring or controlling and test the sound level of any environments. It is widely applicable for personal, families, business, studies, industrial and etc.Specification:This sound level meter is a quality sound level measuring instrument with a set of functions that make it useful for a variety of professionals with a backlight LCD display, 130dB full scale measurement capability, both A and C-weighting measurement support, and peak capture functions, it can help make many measurement tasks easier.Features:Wide Ranges, High Accurate: The Noise Meter features a high-sensitivity, high-precision condenser microphone, capable of measuring noise levels from 30 to 130 dB, high accuracy of ±1.5 dB, frequency from 31.5Hz to 8.5KHz.A/C Weighted Measurement: The A weighted simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. The C weighted simulates the frequency properties of high-intensity noises of the human ear, which are suitable for the sound pressure analysis of machine motors and machines. Fast and Slow Measurement: The decibel meter has the function of converting the fast and slow response rate. The fast response rate uses a time constant of 0.125s/time for general environmental measurement. The slow response rate uses a 1s/time constant, which is used for environmental measurements with relatively large changes in noise levels.Backlight Display: White LCD backlight display, the reading effect is clearer in dark places. When the battery is low, the LCD display will display a low voltage icon, indicating that the power is low at this point and the battery needs to be replaced.Widely Application: This audio noise measure device is a great tool for checking, monitoring or controlling and test the sound level of any environments. It is widely applicable for personal, families, business, studies, industrial and etc.Specifications:Model: TL-205Material: ABSDesigned According to Standards: IEC651 (Type 2) and ANSI S1.4 (Type 2)Calibration Sound Source: 94dB @1KHzMeasurement Range: 30-130dBAccuracy: ±1.5dB (reference sound pressure standard, 94dB @1KHz)Frequency Response: 31.5Hz-8.5KHzResolution: 0.1dBMeasurement Weighting: A or C weightingBar Graph Display: 2dB/Bar graph incrementMeter Response Time: Fast (125 milliseconds) Slow (1 second)Numeric Display Response Rate: Fast (2 updates/second) Slow (1 update/second)Power Source: 3 * AAA 1.5V batteries (Not included)Item Size: 220 * 65 * 30mm / 8.66 * 2.56 * 1.18inItem Weight: 182g / 6.42ozPackage Weight: 273g / 9.63ozPackage Size: 26.5 * 10 * 5cm / 10.43 * 3.94 * 1.97inPackage List:1 * Sound Level Meter1 * Cloth Bag1 * User Manual (English)Package List:Package List:1 * Sound Level Meter1 * Cloth Bag1 * User Manual (English)