Meterk Decibel Meter, Meterk Digital Sound Level Meter, Range 30-130dB(A) Noise Volume Measuring Instrument Self-Calibrated Decibel Monitoring Tester(Battery Included)

* This noise meter has been calibrated at the factory. IF you want to calibrate it again after using a period of time, please use the 94 dB standard source. * Min/Max/Data Hold Function: - The Sound Level Tester records the minimum and maximum sound decibels around any given time range and freezes the current measurement readings. * Large LCD Display: - Clear readings and easy to use at night, widely used in factory, transportation, car, baby room and audio system office, sound quality control in home, school and construction site * Precision measurement & over-range measurement warning sign: - Measurement range: 30-130dBA, accuracy: ±1.5dB, resolution: 0.1dB, there will be a warning sign when the standard exceeds the standard * Convenient & Lightweight: - This sound pressure level (SPL) meter is lightweight and easy to carry. With a mounting hole for the tripod， which can be placed on the stand and is easier to measure when your hands are busy * Auto/Manual Shutdown: - It will automatically shut down afte...