... home, school and construction site. * This meter is featured with wide measuring range (30 ~ 130 dB), A ... frequency weighting, Maximum function and low battery indication. * The meter ... darker the environment, the brighter the illumination.Specifications: Measuring Range30dBA ~ 130dBAAccuracy-1.5dB ~ +1.5dB(91dB ... included. DIGITAL SOUND LEVEL NOISE METER Measuring