Keywords: Professional Sound Level Meter, Digital Noise Meter, LCD Display, Audio Voice Description Meter, Decibel Monitoring Pressure Meter Features: The digital sound level meter has a novel, small, and portable design. Can be turned off both manually and automatically. MIN value, MAX value, and sound level reading value are clearly displayed. Data retention function. Applicable for noise engineering measurement, quality control, health prevention, and various environmental noise monitoring, including noise measurement in various places such as factories, offices, transportation routes, families, stereo systems, and other places. Description: Easy to use and operate. Low energy consumption for long usage time. Simple to operate and convenient to use. Ergonomic design for comfortable handling. Specifications: Measuring Range: 30~130dBA Accuracy: 1.5dB Frequency Response: 31.5Hz~8KHz Frequency Weighted Features: A-weighted Resolution: 0.1dB Working Temperature and Humidity: 0~40℃ 10~80%RH Storage Temperature and Humidity: -10~60℃ 0~90%RH Power Source: 3*1.5V AAA batteries (batteries not included.) External Dimensions: 50*33*159.5mm Package Includes: 1 x Sound Level Meter (batteries not included.)