Whether you are hanging pictures, putting up a new set of shelves or getting ready to start an addition, knowing where the studs are in a wall can be extremely handy! And A good stud finder can be the difference between a successful DIY home project and disaster. That is why a stud finder is important. JAXWQ stud finder uses UPGRADED SMART SENSORS which can sense the change in density in the space behind the wall and locates the stud center with GREAT ACCURACY. You will not worry to drill many error holes on the wall while putting up a TV bracket, shelf unit, or even just a set of coat hooks on drywall.