Digital sound level meter features a high-definition backlit LCD screen for easy reading in various lighting conditions. Unlike handheld sound level meters, this premium wall-mountable dB meter is simple to install and ideal for continuous monitoring. The classroom noise meter can be used throughout your space. It is wall mountable with a 10ft power cord, has a flat bottom for tabletop placement, and operates for extended periods without power thanks to a 2000mAh battery. It also functions as a home theater SPL meter near your TV or in a garage workshop. In addition to decibel measurement, the device includes humidity and temperature readings. The sound level tester offers 3 adjustable response speeds (Fast, Medium, Slow) for accurate and convenient monitoring. Color: As shown Material: ABS Package Contents: 1 x Decibel meter 1 x Positioning sticker 1 set x Screws Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3cm.