DIMMAIRY Decibel Meter, Digital Sound Level Noise Meter Measurement 30-130dB Backlight MAXMIN, Data Hold Auto Power Off Dual Ranges,Black

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About DIMMAIRY Decibel Meter, Digital Sound Level Noise

Decibel meter is a portable instrument for sound quality measuring, monitoring and controlling in office, home, school, traffic, audio system and construction site. Main Feature : (1)Measuring Range: 30～130dBA. (2)Frequency Weighting: A Weighting. (3)Maximum and Minimum value hold function. (4)Data hold function. (5)Red back light alarm and sound alarm. (6)Auto or manual power off fuction. (7)Temperature meansurement fuction (8)Temperature Unit(℃/℉)selection fuction. Specifications: Color: Black Material: ABS Digital display: 4 digits Measuring Range: 30～130dBA Resolution: 0.1dB Accuracy: ±1.5dB (under reference conditions) Frequency Range: 31.5Hz to 8.5Hz Frequency Weighting: A Weighting Data hold: Maximum and Minimum hold Sampling Rate: 2times/s Temperature Measuring Range:-10°C-50°C/14°F-122°F Accuracy: ±2°C Resolution: 0.1°C Power Supply: 3 * AAA Batteries (Not Included) Operating Temperature: 0～40℃ (10%～80%RH) Storage Temperature: -10～60℃ (10%～70%RH) Item weight: 84g/0.19lb Item size: 15*5*2.8cm/5.91*1.97*1.1in Package weight: 157g/0.35lb Package size: 19.5 * 7.5 * 3.5/7.68*2.95*1.38in How to set up alarm range ? Low alarm from 30dB-99.9dB, if the measured value higher than it, red color alarm back light will light up to alert you it is over the low alarm value.High alarm range is from 100-130dB, if the measured value higher than it, red color alarm back light will light up together with voice alarm sound to alert you it is over the high alarm value. Package list : 1 * Digital Sound Level Meter 1 * User Manual(English)