Precise Sound Measurement: Decibel meters use precise capacitive microphones to capture sound. It is equipped with A-weighted facilities that can measure noise levels ranging from 30 to 130 dB with an accuracy of 1.5 dB and frequencies ranging from 30 to 8000Hz. Suitable for monitoring noise levels in communities, home theaters, sound systems, cars, workshops, schools, offices, factories, transportation, and construction sites
Backlit LCD Screen: This sound level meter measures noise levels in decibels and displays them on a 1.25-inch LCD screen, making it easy to read through a large screen design. Long press the backlight button to turn on the backlight, making it easy to view even in dim light
Max/Min Data Retention: A sound pressure level (SPL) meter has a maximum or minimum measurement value, which represents the maximum/minimum (high/low peak) value of the sound produced over a certain period of time. The data retention function can freeze the current reading based on individual needs for sound measurement
Fast/Slow Measurement: The sound level meter has the function of converting fast and slow response rates. The rapid response rate is measured in general environments using a time constant of 0.125 seconds per time. The slow response rate uses a 1s/time constant, which is used for measuring environments with relatively large changes in noise levels
Easy to Use and Fully Functional: Anti slip design, portable noise meter is easy to carry. A decibel meter is a battery powered noise meter equipped with two durable batteries and automatic power-off function, which can extend battery life. When the battery level is low, a low battery indicator light will appear on the screen to remind users to replace the battery in a timely manner
Complete Package Contents: GL81A decibel meter, user manual, screwdriver, and two No. 7 3AAA batteries included in the box for immediate use