PEAKMETER PM6708 High Precision LCD Display Digital Sound Level Meter Noise Measuring Tester Features: 1.  2. Large LCD screen with double reading display can provide clearing value for you. 3. It is compact and you can carry it anywhere you want. 4. This meter uses a fast-responding analog bar graph to display sound level readings with a 50 dB range that is updated every 125 milliseconds to see different trends 5. Suitable for monitoring workplace machines, installing audio or alarm systems, handling product noise certification and reduction   Specification: Condition: Brand: PEAKMETER Model: PM6708 Sound Pressure Accuracy: ±1.5 DB, ±5 DB Sound Pressure Frequency Response: 30Hz - 8Khz. Dynamic Sound Pressure Range: 50 DB (Per Measurement Gear Level). Sound Pressure Measurement Range: 30-130 dB A, 35-130 db C. Sound Pressure Frequency Weighting Characteristics: A and C characteristics. Dynamic Characteristics of Sound Pressure: 125ms Faster, 1 Second Slower Microphone: Polarized Condenser Microphone. Digital Display: 4 Bits, Resolution: 0.1 dB, Sampling Rate: 2 times / sec. The Analog Bar Shows That Each Analog Bar Represents 1 dB and the Sampling Rate is 20 Times/Second. Measuring Gear Levels: 30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB for a Total Of 6 Gear Levels. Automatic Shift Position: The Microcomputer will Automatically Select the Best Gear in the Range of 30 to 130dB. Below or Above The Limit Prompt: Display with ''Under'' or ''Over''. Power: 4x1.5V AAA Battery (not included) Color: Orange Weight: Approx. 328g / 11.6oz Size: As picture shown   Package List: 1 * Digital Sound Level Meter 1 * User Manual 1 * Carrying Bag