Wall-Mount Decibel Meter 8.6 Inch LED Display — 30~130dB Sound Level Monitor with Time, Temperature & Humidity

This large-screen decibel meter features an 8.6 inch LED display with adjustable brightness for clear, real-time readings of sound level, time, temperature and humidity. Built with an intelligent air semiconductor sensor, it delivers high precision measurements: sound level range 30~130dB with ±1.5dB accuracy and frequency response 50Hz~8.5KHz. Environmental readings cover humidity 20~85% (accuracy ±5%) and temperature 14~122 (accuracy ±5%). Versatile for monitoring and control, the unit is suited to noise engineering, product quality control, health prevention, and general sound checks in classrooms, studios, busy roads, factories, construction sites, homes and offices. Installation is flexible — hang it on a wall or set it on a table. Controls include buttons to increase or decrease display brightness and an "M" button to select detection speed (three gears: fast, medium and slow); double-pressing "M" lets you adjust the time. The meter is powered by a built-in 2000mAh lithium battery and includes a 10 ft USB charging cable for convenient placement and recharging.