Welcome to the store! 3-in-1 Decibel Meter: The large decibel meter uses a high-precision decibel detection chip to continuously detect sound levels, temperature, and humidity. Compared to traditional handheld decibel detectors, it's more suitable for home use. Simply turn on the power, detect continuously, and clearly display multiple air indexes on the large screen. Portable Decibel Meter: The decibel meter is powered by a built-in 2700mAh lithium-ion battery, equipped with a USB charging cable, and the charging port is also included in the package. You can use it anytime, anywhere. We recommend connecting the product for long-term use. High-Precision Decibel Detector: This sound level meter uses an intelligent air semiconductor sensor to test decibel temperature and humidity values, which is more sensitive, accurate, and stable than ordinary sensors. Measurement range 30-110dB, accuracy: ±3dB; humidity range: 0-95%, accuracy: ±5%; temperature range: 14-122°F, accuracy: ±2.7°F. Easy-to-Use Decibel Meter: This portable decibel meter is simple to operate. Long press "O" to turn the product on/off; short press "-" to switch temperature units °C/°F; long press "+" to enter/exit the product's timer function. Color: Photo Color Material: ABS Package Contents: 1 x Sound Level Meter 1 x USB Charging Cable 1 x English User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!