This BENETECH GM1351 Digital Sound Level Meter 30dB-130dB is mainly used for measuring environmental noise in various occasions， such as industry， office， traffic， loudspeaker box， air-conditioner， refrigerator， etc. Made of high-quality material， the outer shell is strong and uneasy to crack or break. Featuring a large measuring range from 30dB to 130dB， this device is practical in many fields. Highly accurate measuring degree with 1.5dB difference up and down guarantees its performance and value. What is more， with automatic backlight display， it is energy-saving and environmentally friendly. Come on and create healthy and quiet environment for yourself and your family!                                    Features             Wide measuring range is from 30dB to 130dB<br> High accuracy measuring function <br> Automatic backlight LCD display<br> Maximum value hold function<br> Low battery indication is energy-saving<br> Auto power off function is smart and convenient<br> Handheld design with ergonomic principle is easy to operate<br>                                                            Specifications             Model     GM1351    <br> Weight     186 g / 6.56 oz    <br> Dimensions     (14.5 x 5.5 x 3.5)cm / (5.71 x 2.17 x 1.38)"    <br> Color     White ， Black    <br> Material     Plastic    <br> Measuring Range     30dBA-130dBA    <br> Frequency Response     31.5Hz-8.5Hz     <br>                                                             Package Includes            1 x Digital Sound Level Meter<br>1 x Manual<br>1 x Battery<br>