<p>Quantity: One Piece</p> <p>Color: White</p> <p>Measuring Range: 30~130 dBA</p> <p>Accuracy: ±1.5 dB</p> <p>Digits and Resolution: 4 bits and 0.1 dB</p> <p>Frequency Response: 31.5 Hz ~ 8.5 KHz</p> <p>Frequency Weighting Characteristic: A (Human Ear Simulation)</p> <p>Sampling Rate: 2 times/second</p> <p>Microphone: 1/2 inch Condenser Microphone</p> <p>Power Supply: 9V Battery</p> <p>Product Size: 57*26*149mm</p> <p>Product Net Weight: 144 grams (Battery Included)</p> <p>The device is designed to meet the measurement requirements of engineers safety, health, industrial safety offices, and sound quality monitoring in a variety of environments, including factories, offices, transportation, homes, and audio systems.</p> <p>This is an easy-to-use and convenient mini sound level meter. Designed for sound quality monitoring, it measures sound levels from 30 dBA to 130 dBA. It features auto-ranging, a wide measurement and frequency range (31.5 Hz ~ 8.5 KHz), peak hold, frequency-weighted A, and automatic backlighting. Readings are displayed instantly at the touch of a button. A handy gadget ideal for noise pollution monitoring, home theater installations, health and safety compliance, vehicle noise testing, and more.</p> <p>The automatic backlighting features a light sensor on top of the LCD display that detects ambient lighting conditions. The illumination display increases as ambient lighting conditions decrease. The darker the environment, the brighter the illumination. In addition, it reads in dBA and provides a windscreen to filter out unwanted signals.</p> <p>Wide range of uses: Widely used in noise measurement, quality control, health monitoring, and various environmental sound measurements, such as residential areas, industrial and mining plants, schools, office buildings, airports, transportation, waiting rooms, and other occasions.</p><p>Good quality product</p>