Portable Sound Level Meter: a handy little tool ideal for noise monitoring, setting up a home theater, health and safety compliance, vehicle noise testing, etc. HD digital LCD display: large, easy-to-read LCD screen with backlight, which can display the measurement quickly, clearly and easily. Power source: low battery indicator, automatic shutdown without operation after 10 minutes, convenient and energy saving. Multifunction: measuring range from 30 to 130 dBA. Maximum/minimum/data hold function - automatic shutdown - battery indicator: directly check the remaining battery. Wide range of applications: designed to meet the measurement requirements of sound quality control in various environments. Ideal for testing music recordings, neighbor noise complaints, industrial environments, office environments, speech therapy and more.