1. Use upgraded internal sensors. It senses changes in the density of the space behind the wall and can locate the stud center very accurately. also. The shape of this wall scanner also shows the edges of the studs. The center of the stud is the safest location when installing anything heavy. Edges help you recheck the position. home and make your DIY homework easier 2. Scan mode up to 60mm deep - The stud locator is versatile enough to quickly and easily locate wood metal studs, joists, metal tube rebar and AC wires behind walls, floors and ceilings. Studs can be pattern scanned through a layer of drywall up to 0.75inch (19mm). Deeps can pattern scan through 2 layers of drywall up to 1.5 inches. (38 mm) deep. The deep stud scan mode is a higher sensitivity scan mode and should be used when there are additional layers of wallboard.3. Wire warning indicator, don't worry about drilling into wires - wire warning detection up to 2 inches. (51 mm) deep. As an added bonus, wire warning is always on when you scan in StudScan/DeepScan/MetalScan mode to alert you to the presence of up to 2 inches of , unshielded AC wire. (50mm) deep, which helps avoid drilling or hammering water pipes or wires.4. At the same time, the LCD display can also easily display the required stud and the position of the stud, and display the exact position of the stud. When material is found, the LCD display will indicate the direction and the intensity of the beep will tell you if you are getting closer to the target. The quick detection saves the user a lot of time.5. Not only provides you with high quality and high precision, but also provides a variety of functions to meet your actual needs for drywall, lathe wall, ceiling, drywall, wallboard and more.Product size: 17.2 x 7.6 x 3.7cmProduct net weight 160gDetection r: 19-51mmDetected metal size: 60mmAlarm Mode: BeepBattery type: 9V battery (shipped without battery)color:SilverMaterial:ABSPackage Contents:1 x Wall Scanner1 x English manualOnly 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.