Feature:1. Three in One Multifunctional Sound Level Meter: Designed to meet the needs of most consumers, this sound level meter combines necessary functions of sound, temperature, and humidity measurement.2. Large LCD Screen with Backlight for dB Readings: The digital sound level meter features a large, clear LCD screen with backlighting for easy viewing of measurements, reducing eye strain and enabling effortless reading even in low light conditions.3. Fast Slow and Weighted Measurements: Response time of 125 milliseconds in Fast mode; 1 second response time in Slow mode with +/ 1.5dB accuracy and 0.1dB resolution. The A weighting simulates the frequency characteristics of low intensity noise for environmental noise detection.4. Convenient and Portable Noise Meter: Ideal for various environments including noise engineering, product quality control, health monitoring, and therapy, this sound level meter is a versatile tool for inspecting, monitoring, controlling, and testing environmental noise levels.5. Versatile Applications: Suitable for individuals, households, businesses, educational settings, and industries, this sound level meter is a practical instrument for measuring, monitoring, and evaluating sound levels in a wide range of settings.Specification:Item Type: Sound Level MeterMaterial: ABSBattery: Polymer Battery x 1Battery Capacity: 1000mAh (Shipped with Built in Battery)Calibration Sound Source: 94dB at 1KHzMeasurement Range: 30 to 130dB (A), 35 to 130dB (C)Accuracy: 1.5dB (Reference Standard Sound Pressure, 94dB at 1KHz)Resolution: 0.1dBFrequency Weighting: A/CFrequency: 31.5Hz-8500HzTime Weighting: Fast SlowSampling Rate: Fast (8 times/s), Slow (1 time/s)Rated Current: 70mACharging Time: 1.5hUsage Time: 8hData Storage: 43000.Package List:1 x Sound Level Meter1 x Windproof Sponge Ball1 x User Manual1 x USB Cable