Feature: 1. Large LCD Display: The digital sound level meter has a large and clear LCD backlight display screen, which can clearly display the measurement results. Turn on the backlight and easily take readings at night to reduce eye damage. 2. Fast and Slow Modes: Within 1 second, the slow mode response has a accuracy of 1.5dB and a resolution of 0.1dB. The frequency range is from 30Hz to 8KHz, but the frequency cannot be displayed in digital form on the screen. A weighted simulation simulates the frequency features of low noise and is suitable for detecting environmental noise. 3. Wide Application: The decibel sound level meter can be used in many environments, and is also suitable for noise engineering, treatment, and more. This audio noise measurement device is an excellent tool for checking, monitoring, or controlling and testing environmental sound levels. Widely applicable to individuals, families, businesses, learning, industries, etc. 4. Broad Test Range: The noise measurement range is 35~135dBA, and the frequency response range is 31.5Hz~8KHz, so the decibel tester with wide test range will meet your various needs. 5. Convenient Carrying: Comes with a compact size and a light weight as well, the digital sound level meter is very convenient to carry for both indoor and outdoor working. Specification: Item Type: Digital Sound Level Meter Material: ABS Battery: 3 x AAA battery, shipped without battery. Noise Measurement Range: 35~135dBA Frequency Response: 31.5Hz~8KHz Dynamic Range: 50dB Temperature Range: -0~60.0℃. Package List: 1 x Digital Sound Level Meter1 x User Manual