?13'' LED LARGE DISPLAY?Decibel meter uses a 13-inch LED display with 3 levels of adjustable brightness, providing clear readings of decibels, time, temperature, and humidity. The measurement range covers 30~130dB, ensuring that the data is accurate and easy to read ?FACE ICONS INDICATOR?Sound decibel meter uses face icons to indicate different noise levels, green ( 60dB), yellow (60-85dB), and red ( 85dB), with an adjustable buzzer alarm to effectively monitor ?HIGH ACCURACY?Our sound level meter is more sensitive, accurate, and stable than ordinary decibel meters. Provides 12H/24H time format options (AM/PM), temperature measurement: -40~80C, humidity measurement: 0~100%RH, measurement range: 30-130dB, 1dB high-precision measurement ?MULTI-FUNCTION?The noise meter is equipped with a buzzer alarm function, which can be manually switched on and off and the decibel alarm threshold can be adjusted. Display speed: FAST(125ms) / SLOW (1s). The temperature can be converted to C/F, and the red light will turn on when the battery is low ?WIDE APPLICATION?Decibel meter sound level reader supports desktop or wall mounting, built-in rechargeable battery, and comes with a 9.8-foot USB charging cable. Decibel meter is widely used in classrooms, studios, and offices