Stud Finder Wall Scanner Sensor,5 in 1 Electronic Stud Detector Wall Scanner with LCD Display & Audio Alarm for Wood Wire Metal Stud Cable Joist Detec

Product description Stud Finder Wall Scanner, 5 in 1 Stud Sensor Beam Detector with LCD Display & Audio Alarm for Wood AC Live Wire Metal Studs Detection Joist Pipe Instructions for Use: Step 1:Calibrate the tool before every scan After choose the mode, press and hold the scan button( on the side of the tool) to calibrate this tool. Wait for the reducing bars disappeared and beep to confirm calibration has completed. Step 2: Scan the wall Hold down the button, then move the stud finder along the wall slowly, if shake or lift the scanner accidently, the device needs to be re-calibrate. Step 3: Find the location of the stud When the signal bar is full and the beep alarm is loudest, it means you have found the center of an object.Mark it with your pencil. Package Included 1*Stud Finder Wall Scanner 1*9V Battery