1. It is a perfect sound level meter for measuring noise levels in homes, factories, offices, theaters and audio systems. 2. Digital Sound Level Meter Measuring Range: 30~130dBA; Accuracy: +/- 1.5dB; Resolution: 0.1dB; Records Max/Min values all the time. 3. Large LCD Screen of Decibel Tester: Features a large backlit screen with LCD display, makes it easy to read the result. 4. Fast Response: Measures in dBA Frequency; Frequency Response: 31.5Hz~8.5KHz. Records Max/Min values all the time. 5. Portable Ergonomic Design: This sound level meter is comfortable to hold, sturdy and well-made, can easily fit in a bag and be carried around. Digital Sound Level Meter. Noise Measurement Tester for Indoor/Outdoor Use This portable digital sound level meter is applicable for the measurement of noise engineering, quality control, health prevention and various environmental noises, including noise measurement in factories, offices, route transportation, families, stereo equipment and other places. Features: 1.Measuring Range: 30~130 dBA 2.Accuracy: ±1.5 dB. 3. Frequency Response: 31.5Hz ~ 8kHz. 4.Resolution: 0.1dB. 5.Operating Temperature & Humidity: 0 ~ 40℃, 10 ~ 80%RH 6.Storage Temperature & Humidity: -10 ~ 60℃, 0 ~ 90%RH High Accuracy: With stable performance and high accuracy, perfect for sound level measurement (30dBA - 130dBA). Easy to Use: With simple buttons. The power button can turn on/off the power and backlight; the MIN/MAX button can display the MAX/MIN measurement; The HOLD button can hold data. Multiple Uses: Comes with a compact and lightweight design, designed to fit comfortably in your palm, convenient to carry. Widely used for monitoring noise level in factories, offices, theaters, and audio systems. Notes: Please do not use the meter in a high temperature and humid environment. Please remove the batteries when not in use for a long time to avoid electrolyte leakage and damage to the meter. When measuring noise outdoors, please mount the wind-resistant ball on the microphone head so that it will not be blown directly by the wind and measure other noises. Delivered Quantity: 1 Piece