Wagu drum Decibel Meter Wall Hanging Sound Level Meter 11 inch Large LED Display Temperature Humidity Meter with Alarm Icons Indicator Wide Applications for Classroom, Studio, Home, Factory Gas Detector

【Large 11-inch LED Display】 decibel meter is equipped with 11 inches LED screen and brightness adjustable, you may see the real-time decibel level, Temperature and Humidity more clearly 【Face Icons Alarm】This noise decibel meter will automatically switch face icon alarm when the decibel at different level(no audible alarm)【Green Icon】Less than 60dB;【Yellow Icon】60~75dB;【Orange Icon】75~85dB;【Red Icon】More than 85dB 【High Accuracy&Calibration】The noise meter has large measuring Range: 30~130dB with high accuracy: +/-1.5dB, and it features Calibration function, it's bale to recalibrate the devibel meter if the db reading is inaccurate after long-term usage 【User-Fridendly】 sound meter is designed with 2000mAh Lithium battery, 9.8 feet(300 cm) length USB cable for charging, no worry the USB cable is not length enough 【Wide Applications】This decibel meter sound level reader can be mounted on the wall or placed on destop, it's an ideal noise meter to measure the sound level in Classroom, Studio room, traffic routes, factories, construction site, home, offices, etc.