Features: This portable sound level meter features high precisions, providing reliable data analysis for assessing noise level in various environments. With its pen style design, this noise tester allows users to easily hold and operate with onehands, making noise testingmore flexible and convenient. Idealfor environmental monitoring personnel such as urbanplanners and environmental protections departments, helping them accurately measure and evaluate noise level in the environment. Perfect for construction workers, this noise tester provides a convenient mean of noise detection in constructionsites and mechanical operation areas, ensuring a safe working environment. Also suitable for monitoring noise pollution in urbanenvironments like streets and square, contributings to the assessment and improvement of city noise pollutionissues. Specifications: Material:ABS, Electronic Component Size:Approx.180x32x31mm/7.08x1.25x1.22inch Color:Black Measuring range: 30-130dBA Working temperature: -20~60℃ Package Includes: 1x Decibel Meter note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.