Description: Full-scale backlight (range: 30dB~130dB Precision: +/-1.5dB, Sine wave of 1KHz at 94dB Standard of IEC651, Resolution 0.1dB Range: Low Freq band 60dB~100dB High freq band: 60dB~130dB Specification: Frequency range: 31.5Hz - 8kHz Range: 30dB-130dB Microphone: 1/2 inch electric condenser microphone Calibration: Electrical calibration with the internal oscillator Display: LCD 4 digits Standard applied: IEC 651 type 2, ANSI S1.4 type 2 Frequency range: 31.5Hz - 8kHz Range: 30dB-130dB Microphone: 1/2 inch electric condenser microphone Calibration: Electrical calibration with the internal oscillator Display: LCD 4 digits Standard applied: IEC 651 type 2, ANSI S1.4 type 2 Color:Yellow Material:Plastic Package Includes: 1x Sound Level Meter