Description: detection Function: helps you quickly & easily locate wood, metal studs, joists, beams, metal pipes, rebar & ac wire behind walls, floors, ceilingsLCD Display & Sound Warning: can help detect the accurate location of the objects. saves you lots of time by displaying the desired stud center & the precise position of the stud.Highly Compatible: lightweight, long lasting and convenient to use in your home, office, workshop. makes all of your diy home projects easier such as mounting your tv, bathroom cabinet, photo frame, garage racks etc.Automatic Calibration and Simple Use: turn on the stud finder and complete calibration by placing it on the wall. the finder will flash and beep once it has picked up the edge of a stud. automatic calibration before using provides users with maximum reliability & accuracyComfortable Design: means you can hold the wall scanner in your hand comfortably. strong s you hold the electric stud finder tightly & keep it moving correctly to get more accurate results. Specification: Maximum detection depth: ferrous metal: 110mmNon ferrous metal: 110mmLive wire (110V/230V): 50mmWood (non metal): 25mmWorking temperature: - 10~50CStorage temperature: - 20~70CHumidity: 75%Altitude: 2000 meters Size Chart: 18.5cmx8.5cmx3.3cm/7.28inchx3.35inchx1.30inch Package Includes: 1 Stud Finder Wall Scanner Note: Color might be slightly different due to the color calibration of each individual monitor.Please allow slightly measuring deviation due to manual measurement.