Features:  Multifunctional decibel meter, suitable for noise engineering, quality control and various environmental noise measurement, such as in factories, offices, homes, etc.  High-clear LED display, with backlight, can check the value even in dark conditions. The operation panel is simple and easy to use.  Custom set the decibel alarm value. When the measured value exceeds the preset value, the machine will flash the backlight to alarm.  Condenser microphone, built-in high performance sensor, three-layer sensitive conductive layer, metal cover is safe and anti-drop.  The microphone is designed with a windproof sponge to filter the interference of wind, with higher measurement accuracy and more accurate values.  The noise meter can record the maximum and minimum values, supports data retention and automatic shutdown functions, which is convenient and practical.    Specifications:  Color: White  Material: Plastics  Measure Range: 30-130dBA  Accuracy: ±1.5dB  Frequency: 31.5Hz-8KHz  Frequency Weighting: A  Resolution: 0.1dB  Power: 3 * AAA Battery(Not Included)  Working Environment: 0-40℃, 10-80%RH  Storage Environment: -10-60℃, 0-90%RH  Item Size: 50 * 30 * 159.5mm/ 2.0 * 1.2 * 6.3in  Item Weight: 80.08g/ 2.8oz  Package Size: 168 * 55 * 30mm/ 6.6 * 2.2 * 1.2in  Package Weight: 136g/ 4.8oz    Packing List:  1 * Decibel Meter  1 * User's Manual      By the way,if you like our store,please add our store to your Favorite Stores.You can get our New arrival and Discount   information in time.