Digital Sound Level Meter, Digital Decibel Meter, Professional Decibel Meter 30-130dBA, Min/Max Data, Low Battery Symbol, LCD Backlight, Auto Power Off, for Home, Office, Industry Accurate Measurement: The sound meter can measure sound quality in various environments without touching it and display test results quickly and accurately. Sensitive Sensor: The sound meter uses a professional high-speed sensor with excellent sensitivity and accuracy. Performance is stable and reliable. High-Definition Display: Very large and bright LED backlit display that can handle bright light and night environments. Auto Power Off: This sound meter has an auto power-off function. It automatically shuts off after 3 minutes of inactivity, which is environmentally friendly and energy-saving. Wide Range of Applications: The sound meter is widely used in vehicle noise measurement, industrial noise measurement, and home noise measurement. Accuracy: ±1.5dB Frequency Range: 31.5Hz to 8.5Hz Measurement Level: 30-130dBA Resolution: 0.1dB Time Weighting: Fast Power Supply: 3 x 1.5V AAA Alkaline Batteries (Not Included) Microphone: 1/2 inch electret condenser microphone Operating Temperature: 0-40℃ Operating Humidity: 10% to 80% RH Storage Temperature: -10-60℃ Storage Humidity: 10% to 70% RH Package List: Package including 1 * Digital Sound Level Meter Note: Nothing else is included here, the color depends on the first picture, the other pictures only show the effect. Due to differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow for deviations. Thank you!