EBay➤The Most Accurate & Improved Safety - specializes in stud finder for years and adopts the most Advance Sensors Technology for accurately & quickly locating studs wood metal AC wires! For Safety, in all modes, this wall scanner always detect and indicate the Live AC Wire. Whether you are a professional, homeowner or a DIY enthusiast, you can find great use in this electronic stud scanner ➤4 IN 1 Multiplication Plus Deep Detection - This digital wall scanner includes four different scanning modes for woods, beam, joist, metals, AC wires and deeply embedded objects behind floor, ceiling, wall. Stud mode detects wooden beams and joists in drywall up to 1.2 Inches. Metal mode detects pipe, rebar, aluminum and copper up to 1.57 Inches. Deep mode detects wood and metal parts located up to 1.77 Inches while 85~240 volt AC current for voltage and live electrical lines up to 2.36 Inches ➤Upgrade Design of LCD Screen - Displaying the Desired Stud Material As Well As the Precise Position of the Stud - The digital stud scanner features large LCD display together with the big sound warning to detect the accurate location of the objects. When find the material, the LCD display will indicate the direction and the intensity of beeping tells whether you are more close to the target. The fast detection saves users time and efforts, making the task completion EASIER ➤Automatic Calibration and Ergonomic Grip for Comfortable Use - Turning on the stud finder and Completing Calibration until the BEEP sound and screen shows disappear. The automatic calibration before using provides users with maximum reliability and accuracy. Then put it on the wall. The wood beam finder will flash and beep once it has picked up the edge of a stud. The ergonomic design of this wall stud finder makes it comfortable to hold from any angle