digital sound level meter is equipped with a high-definition backlit LCD screen, so that you can effortlessly read it throughout the day at your . Unlike handheld sound level meters, premium wall-mountable dB meter is simple to set up and perfect for continuous monitoring. classroom noise meter can be used all over your space. It's wall mountable with a 10ft power cord, flat-bottomed for placing on , and lasts for hours unplugged with a 2000MaH battery. Also, it can be a home theater SPL meter by the TV or in your garage workshop.We've included HUMIDITY and TEMPERATURE readings in addition to bringing you the decibel meter we could. And to top it off, the sound level tester has 3 ADJUSTABLE SPEEDS (1. Fast 2. Medium 3. Slow) to make reading it a breeze.color:As shownMaterial:ABSPackage Contents:1 x decibel meter1 x positioning sticker1 set x screwsOnly 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.