Feature:1. Multifunctional: This sound level meter is multifunctional with sound level, temperature and humidity measurement functions to meet the needs of most consumers.2. Large Backlight LCD Screen: This sound level meter features a large, clear backlight LCD display that clearly shows measurements. With backlight on, readings are easily taken at night, reducing eye damage.3. Wide Application: This sound leveler has a very wide range of applications and is widely used for individuals, families, businesses, studies, industries and so on.4. Excellent ABS Material: This sound leveler is made of excellent ABS material, which is strong and wear resistant, not easy to be damaged, and has a long service life.5. Compact And Portable: This sound leveler is small in size and light in weight, which makes it very convenient to carry around with you.Specification:Item Type: Sound Level MeterMaterial: ABSBattery: AAA Battery x 3 ( Shipped Without Battery )Noise Measurement Range: 30-130dBAFrequency Response: 30Hz-8KHzDynamic Range: 50dBTemperature Range: -20.0-60.0Humidity Range: 0.0%-99.9%RH.Package List:1 x Sound Level Meter1 x Manual1 x Storage Bag