Diemmern 4-in-1 Digital Decibel Meter — 11" Large LED Display, 30~130dB (±1.5dB), USB Rechargeable 2000mAh

Compact 4-in-1 environmental monitor with a large 11" LED screen that shows sound level, temperature, humidity and a clock. The Diemmern decibel meter features an adjustable-brightness display and a dimmer function for easy viewing in any lighting. It can be hung on a wall or placed on a table for continuous monitoring. Precision sensing: built around an intelligent air semiconductor sensor to deliver sensitive, stable readings for sound, temperature and humidity. Sound measurements cover 30~130dB with ±1.5dB accuracy and a frequency response of 50Hz~8.5KHz. Humidity is measured across 20~85% with ±5% accuracy. Temperature range is 14~122 with an accuracy of ±5%. Controls and modes: brighten or dim the display with the brightness buttons; press the "M" key to toggle detection speed between three settings (Fast, Medium, Slow). Long-press "M" to set the time. Ready to use out of the box for quick installation. Applications: suitable for checking and monitoring ambient noise and environmental conditions in classrooms, studios, busy roads, factories, construction sites, offices and homes; also useful for noise engineering, product quality control and health prevention. Power and charging: built-in 2000mAh lithium battery with a 10 ft USB charging cable for flexible placement and convenient recharging. If you encounter any issues, please contact us and we will respond promptly.