Precision sound level meter ideal for measuring noise levels in different environments and industries. 35mm LCD display with function indicators and backlight.Foam wind muffler for outside use.3 Manual ranges, 30 to 80dB, 50 to 100dB, 80dB to 130dB.0.1dB resolution.Selectable ‘A’ or ‘C’ frequency weightings.Fast (125ms) or slow (1s) response filters.Data hold function freezes displayed value.Max/Min hold displays highest/lowest measured value.Over/under range indicator.Low battery indication.Auto power off after 15 minutes of no activity.2 Year warranty.Soft carry case and batteryl included.