Features: Professional Sound Measurement: The HT602A/B decibel tester accurately measures sound intensity from 30 to 130 units, ideal for home, industrial and environmental monitoring applications. High Accuracy Measuring Technology: With innovative components, this noise measuring tool provides fast and consistent readings in various environments like streets, offices and quiet study spaces. User Friendly Design: Featuring simple single button activation and a clear LCD display, the HT602A/B allows easy real time sound measurement for users of all experience levels. Versatile Functions: Includes sound retention mode to identify highest intensities and provides multiple measurement preferences for flexible noise analysis. Compact & Strong Construction: Lightweight ABS substance makes this sound meter portable yet sturdy, perfect for use across different locations. Specifications: Product name: Noise meter decibel tester substance: ABS Properties: HT602A and HT602B Package Includes: Noise meter decibel testerx1 note: Before using the accessory, please check if it is compatible. Pay attention to the storage methods.