Wall-mounted 27.9 cm decibel sound level meter - Large LED display - Noise, temperature, humidity - With alarm icon indicator - Multiple uses: classroom, studio, home, factory

Large 11-inch LED Screen: The DANOPLUS decibel meter is equipped with an 11-inch LED screen and adjustable brightness, allowing you to clearly see the real-time decibel level, temperature, and humidity.Face Icons for Alarm: This sound level meter will automatically switch to alarm mode based on face icons at different decibel levels (no audible alarm). Green icon: Less than 60 dB; Yellow icon: 60 to 75 dB; Orange icon: 75 to 85 dB; Red icon: More than 85 dBHigh Accuracy and Calibration: The sound level meter has a wide measuring range of 30~130 dB with high accuracy of +/- 1.5 dB, and it features a calibration function.The sound level meter can be recalibrated if the dB reading is inaccurate after prolonged use.User-friendly: The DANOPLUS sound level meter is designed with a 2000mAh lithium battery and a 9.8-foot (300 cm) USB charging cable, so you don't have to worry about the cable being too long.Multiple applications: This decibel sound level meter can be wall-mounted or placed on a desk. It's an ideal noise meter for measuring sound levels in classrooms, studios, traffic lanes, factories, construction sites, homes, offices, etc.