Description The product is shipped based on the color or size of the main image of the product page. This noise meter is designed to test sound level in various environment. It is widely used in noise control engineering, quality control, health and treatment, home environment monitoring, etc. Features: Mini digital sound level meter with stable and reliable performance. Wide measurement range from 30dB to 130dBA. Fast and slow sampling rate for choice: 125ms or 1s. Data hold function, maximum and minimum value measurement. LCD display with backlight, convenient to use at night. Low battery indication, automatic manual power off function. Compact and light, convenient to hold and carry. Equipped with sponge ball for sensor protection. NOTE: When measuring under MAX mode, the meter will only display the value greater than the current value; when measuring under MIN mode it will only display the value less than the current value. Specifications: Color: White; Material: ABS Plastic; Display: 5 digits LCD, Max Display 99999; Measuring Range: 30130dBA; Resolution: 0.1dB; Accuracy: 1.5dB (under reference conditions); Frequency Range: 31.5Hz to 8.5Hz; Frequency Weighting: A Weighted; Over Range: LCD Show Over; Time Weighting: Fast; Sampling Rate: 2times/s; Operating Temperature: 040 (10%80%RH); Storage Temperature: -1060 (10%70%RH); Power Supply: 3 * 1.5V AAA Batteries (Not Included); Package List: 1 * Digital Sound Level Meter; 1 * User Manual