• Measures 40 to 130dB on digital display
• Fast responding analog bar graph
• Auto power off and Max Hold function
• ±2dB accuracy with 0.1dB resolution
• A+C weighting
• AC analog output
• Record Max/Min values over time
• Utilizes 0.5"(12.7mm) electret condenser microphone

The 407730 sound level meter measures from 40 to 130dB with an accuracy of 2dB. The digital display offers a 0.1dB resolution and features a fast responding analog bar graph. User can choose A or C weighting. Max Hold captures highest reading. Includes microphone wind screen and four AAA batteries.