27.9 cm wall-mounted 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 dB

High Accuracy and Calibration: The sound level meter has a wide measuring range: 30~130 dB with high accuracy: +/- 1.5 dB, and it features a calibration function.

It is possible to recalibrate the sound level meter 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 cable for charging, so you don't have to worry about the USB cable being too long. Numerous applications: This decibel sound level meter can be wall-mounted or placed on a desk. It is an ideal noise meter for measuring sound levels in classrooms, studios, traffic lanes, factories, construction sites, homes, offices, etc.