1、[LCD Display] Portable noise meter with 2.7in large LCD display screen for easy reading, real time display of current temperature (℃/℉ switchable) and humidity. 2、[Wide Measurement Range] High accuracy measurement, the measurement range is 30‑130dBA / 35‑130dBC, the frequency is 31.5Hz‑8KHz, the resolution is 0.1dB, and the accuracy is ±1.5dB. 3、[Data Storage Function] Allows to store up to 15,000 sets of data, connect to a computer through a USB cable, support data record download, real time sampling analysis, graphics and data printing. 4、[Multiple Functions] Equivalent weighted sound pressure level of A and C, fast and slow dynamic characteristics mode, AC and PWM signal output are available, low battery indicator, automatic and manual power off. 5、[Widely Used] Equipped with a sponge ball and storage box, small and light, suitable for noise measurement and monitoring in many industries such as traffic roads, automobile measurement, mechanical processing, home furnishing, and libraries.