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Lutron SL-4023SD Sound Level Meter

Lutron SL-4023SD is a sound-level meter with an SD card. * The Main functions are designed to meet IEC 61672 class 2 * Hold and Peak Hold Function * SD card capacity: 1 GB to 16 GB * RS232/USB PC Computer interface * Power by UM3/AA (1.5V) x 6 batteries or DC 9V adapter