Decibel Tester Good Protection Sound Level Meter for Office Feature:1. Noise Testing: Able to test the decibel to show the sound level, the noise meter will provide you with real time data.2. High Accuracy: With 30130dBA measuring range and 1.5dB accuracy, also ensures quick response and high sensitivity.3. Better Design: Comfortable hand feel together with non slip design and digital display will largely simplify operation.4. Broad Utility: Enables wide application of the detection in factory, office, home, school, restaurant, hospital, etc.5. Easy Carrying: Compact in size and light in weight as well, the easy carrying makes it ideal for indoor and outdoor.Specification:Item Type: Sound Level MeterMaterial: ABSBattery: 3 x 1.5V AAA battery(without battery)Function: For sound level detection. Measuring Range: 30~130dBAAccuracy: 1.5dB(94dB, 25 2)Resolution: 0.1dBFrequency Range: 31.5HZ~8KHZFrequency Weighting: APackage List:1 x Sound Level Meter1 x User Manual How to use: Automaticallydetectatstartup.