Digital Noise Decibel Meter 30~130dB — Fast Response Sound Level Logger, 0.1 dB Resolution

Overview: A professional digital sound level meter designed for quick, accurate noise measurements and data logging. Ideal for environmental checks, workplace monitoring and diagnostic use. Key Measurement Ranges: - Sound Level (selectable levels): Level 1: 30 ~ 80 dB Level 2: 50 ~ 100 dB Level 3: 60 ~ 110 dB Level 4: 80 ~ 130 dB Level 5: 30 ~ 130 dB - Resolution: 0.1 dB - Dynamic Range: 50 dB / 100 dB Signal and Weighting Characteristics: - Frequency Weighting Characteristic: A / C - Analog Graph: 1 dB / 1 bar graph - Sampling Rate: 20 times / second - PWM Signal Output: duty cycle = 0.01 x dB x 100% / 3.3 - Dynamic Characteristic (Time weighting): FAST(high speed) / SLOW( speed) - Calendar Accuracy: ±30 seconds / day Microphone and Power: - Microphone: 0.5 inch polarization capacitance microphone - Power Supply: 4 x 1.5V AA battery (not include) or USB Cable - Power Life: about 20 hours continuous use (alkaline battery) Environment and Physical: - Operating Temperature: 0 ~ 40 °C (32 ~ 104 °F) - Operating Humidity: ?80 % R.H. - Dimensions: approx. 256 (L) x 70 (W) x 35 (H) mm (10.1 x 2.8 x 1.4 inch) - Weight: approx. 308 g (without battery) Package Contents: 1 x Professional Sound Level Meter 1 x Sponge Ball 1 x USB Cable 1 x Software 1 x English Instruction Related items: decibel meter, db meter, sound decibel meter, sound meter, sound level meter, spl meter, decibel meters, sound meter, noise decibel reader, noise meter, noise detector, noise monitor, noise nuisance recorder, noise monitor for classroom