Features: AUTO Alarm Icons: the noise alarm face automatically switches when the decibel level changes. [Green] Less than 60dB; [Yellow] 60~75dB; [Orange] 75~85dB; [Red] More than 85dB High Accuracy: Decibel Level Measuring Range: 30~130dB, Accuracy: ±1.5dB; Frequency response range: 50Hz ~8.5KHz; Temperature Range: 14~140°F; Humidity Range: 20~85% EXTRA LARGE LCD DISPLAY & WALL MOUNT: Our digital sound level meter is equipped with a high-definition backlit LCD screen, allowing for easy reading throughout the day. Unlike handheld sound level meters, this wall-mountable dB meter is simple to set up and ideal for continuous monitoring. VERSATILE & LONG-LASTING: This noise meter can be used in various environments. It is wall mountable with a 10ft power cord, has a flat bottom for table placement, and operates for hours without being plugged in thanks to a 2000mAh battery. It can also function as a home theater SPL meter near your TV or in a garage workshop. BONUS FEATURES: Includes additional humidity and temperature readings. The sound level tester also offers 3 adjustable response speeds (1. Fast 2. Medium 3. Slow) for easier monitoring. Color: As Shown Material: ABS Package Contents: 1x Decibel Meter 1x Mounting accessories 1x USB charging cable 1x English Manual Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the image to appear slightly different from the actual product. Measurement may vary by +/- 1-3cm.