This digital sound level meter is mainly used to test the noise generated normally. It can accurately measure the decibel value of noise. It can constantly monitor ambient sound. It is lightweight, compact, ergonomic, and user-friendly. Features -Color:Black -Material:Plastic -Size:14.50X5.00X2.50cm/5.70X1.97X0.98in -Battery: 3 × AAA batteries (Included) -Frequency response: 31.5Hz-8KHz -Measuring ranges: 30-130dB -Accuracy: ±1. (94dB@1KHz) -Display resolution: 0.1dB -Operating : 0-40 degree centigrade -Operating humidity: 10-90%RH -Storage : -10 to 60 degree centigrade -Storage humidity: 10-75%RH - Accurate measurement: Our digital sound level meter is designed with a high accuracy of 0.1dB, very precise and professional. - Easy to use: With a large screen display and simple structure, the Decibel Meter is easy to use for everyone. - Portable design: The compact size and lightweight makes it easy to carry around, widely applied to outdoor measurements. - Wide application: The Decibel Meter is able to be used for many occasions, to meet different noise measuring needs. - Long serving life: The sound level meter is made from plastic, sturdy and , ensuring long serving life. Package list: 1 x decibel meter