Akozon Digital Decibel Meter GM1359 Hand-Held Sound Level Meter DB Meter Environmental Noise Tester with Noise Measurement Reader Range 30-130dBA Max/Min/Hold Data LCD Backlight Display

Mini Noise Meter: This is an easy-to-use and handy mini-sound level meter. Designed for a sound quality control that measures sound levels from 30dBA up to 130dBA. High quality buttons for easy operation and long-term use.Just press a button, the readings will be displayed instantly, easy and convenient to use. Application: This Digital Noise Meter was designed to meet the measurement requirement of safety engineers, health, industrial safety bureaus and sound quality control in various environments, including factory, office, traffic, family and audio system. A great little tool great for monitoring noise pollution, home theater setup, compliance with health and safety regulations, driving noise testing, etc Operation Principle: The Noise Meter is the most basic and convenient instrument for measuring noise. It consists of a condenser microphone, preamp, attenuator, amplifier, frequency meter and meter. The working principle is that the sound is converted by the microphone into an electrical signal and the value is displayed on the screen.Auto Power Off, Low Battery Indication, Max Hold Function Measurement Range: Min/Max/Hold Function - Sound level tester allows you to take note of the minimum and maximum sound decibels in your surrounding at any given time frame; Hold function could freeze the current measurement reading.The Digital Noise Meter has automatic range, wide measurement and frequency range (31.5Hz ~ 8.5KHz), maximum stop, frequency weighting A and auto Backlighting. LCD backlight: Digital Noise Meter Equipped with sponge ball to filter out unwanted signals. USB data interface for reading and storing measurement data on a computer, with LCD backlight for easy reading in the dark.The darker the environment the brighter the illumination. So, it reads in dBA and provides windscreen to filter out unwanted signals.