1Wide Application:Decibel meter can be used to measure noise, such as engineering, schools, hospitals, shopping malls, theaters, offices, road traffic, homes, stereos, etc. 2High Accuracy: Sound level meter can accurately detect noise, with a measuring range from 30 to 130dBA and a shift function, so it is practical. 3LCD Screen: Noise level meter adopts LCD screen, which can clearly display the numerical value and has good anti interference. 4Backlight Function: Sound monitor has backlight function, saves electricity, and is suitable for collecting sound data at night. 5Data Transmission: Noise detector can perform data transmission function through USB data cable, and upload it to the computer for analysis.1 x Decibel Meter1 x USB Power Cord1 x CD1 x User Manual