Widely used in acoustical measurements, automobile industry, in environmental protection works/projects, healthcare sector, etc. 
Make fast and accurate measurements of noise levels in any place 
Can fix maximum and minimum level noise level on the display 
Data is displayed clearly on the LCD display with illumination for users to easily view the recorded values 
Automatically switches off in 20 minutes of inactivity to conserve battery life so as to provide longer run time
Runs on 9V battery