Lutron SL-4010 Sound Level Meter

Lutron SL-4010 Sound Level Meter is used to detect sound levels when the parameter is violated and helps users to alert for over and under-range values. This device is a maximum hold function that can measure the range from 35 to 130 dB with a 0.1 dB resolution and works on a DC 9V battery.
Features of Lutron Sound Level Meter:

• This Sound Level Meter has a Large LCD  
• It has a build-in adj. VR is available for easy calibration
• This Sound Level meter designed small and lightweight to allow one-hand operation
• Hold function to freeze the display value. 
• Indicates when battery is low
• Warning indicator for over and under range. 
• High quality with economical cost.