4-in-1 Diemmern 11" LED Decibel Meter — 30-130dB Sound Level Meter with Thermometer, Hygrometer & Clock, 2000mAh USB Rechargeable

All-in-one 4-in-1 monitor with a large 11" LED display and adjustable brightness. This Diemmern Decibel Meter integrates a sound level meter, thermometer, hygrometer and clock into a single unit, designed to simplify monitoring at work or home. Precision sensing: Equipped with an intelligent air semiconductor sensor for decibel, temperature and humidity detection. It delivers higher sensitivity, stability and accuracy compared with ordinary sensors. Sound measurement range: 30~130dB with accuracy ±1.5dB and frequency response range 50Hz~8.5KHz. Humidity range: 20~85% with accuracy ±5%. Temperature range: 14~122 with accuracy ±5%. Large, readable display and flexible placement: The 11" LED screen features a dimmer for brightness adjustment. The unit can be wall-hung or placed on a tabletop, making it suitable for classrooms, studios, busy roads, factories, construction zones, offices and homes. Simple controls: Use the brightness-up and brightness-down buttons to change screen illumination. Press the "M" button to select detection speed (three gears: fast, medium, slow). Long-press "M" to set the clock. Rechargeable and portable: Built-in 2000mAh lithium battery and supplied with a 10 ft USB cable for convenient charging anywhere. The device is ready to use out of the box. If you encounter any problems, please contact us and we will respond promptly.