2X Decibel Meter Wall Hanging Sound Level Meter 30-130DB Range 8.6 Inch Large LED Display Time Temperature 2000mAh Battery 10 ft USB

Portable noise monitor with a built-in 2000mAh lithium battery and a 10 ft USB charging cable for flexible placement and convenient recharging. Use it anywhere to measure, monitor or control environmental sound levels — suitable for noise engineering, product quality control, health prevention and treatment. The unit can be hung on a wall or set on a tabletop, making it ideal for classrooms, studios, heavy-traffic areas, factories, construction sites, homes and offices. Sensor and performance: equipped with an intelligent air semiconductor sensor for decibel, temperature and humidity detection. This sensor offers greater sensitivity, stability and accuracy compared with ordinary sensors. Sound measurement range: 30~130dB with an accuracy of ±1.5dB and a frequency response of 50Hz~8.5KHz. Humidity measurement: 20~85% with ±5% accuracy. Temperature measurement: 14~122℉ with ±5% accuracy. Display and controls: large 8.6 inch LED screen shows real-time decibel, time, temperature and humidity readings with adjustable brightness. Press "▲" to increase brightness, "▼" to dim the display. Press "M" to change detection speed between three gears (fast, medium, slow); double-click "M" to set the time. Ready to use out of the box and easy to operate for continuous monitoring.