1. Digital Construction Detector, Wall Detector with LCD Screen, Electronic Beam Scanner for Detecting Metal/Wire, Electrical/Wooden Beams in Walls, Floors and Ceilings 2. 【Beam Detector】 - 【High Precision Sensor】 Advanced sensor technology can accurately and quickly locate the location of metal and wooden AC lines. Detect the center position of metal or wooden beams in the wall. In addition, it can detect metal and voltage features in the wall and determine whether the wires in the wall are energized. Whether you are a professional or a DIY enthusiast, this digital beam scanner can be suitable for you. 3. 【Easy to Use LCD Screen Reading】 - The digital beam scanner has a large LCD screen with a loud warning sound to accurately locate objects. When the material is found, the direction and intensity of the material will be displayed on the LCD screen. A beep will notify you if you are approaching the target. Fast detection saves users time and effort and makes tasks easier. 4. 【Auto - correction function】 - With the beep and alarm sound, the user can easily hide the screen to complete the tasks. Adjust the finder to the right angle. Wooden beams are fixed on the wall, open the finder. Press and hold the button and complete the calibration. Automatic calibration before use ensures users reliability and relatively high accuracy. Then hang it on the wall. When the edge of the beam is picked up, the finder beam detector will flash and beep. 5. A beam detector is a device used to locate the location of framing beams behind drywall. This multi - scan beam finder uses electronic signals to quickly locate the edges and center of metal, beams, joists, pipes and live wires behind walls, floors and ceilings. 6. How to use the electronic beam finder? - Step 1: Insert a 9V battery (not included) and select the mode. - Step 2: Place the device in the open position. Hold it against the wall. Then press and hold the button. Hold the device steady until the calibration is complete (1 - 2 seconds). When the calibration is complete, the device will emit a short beep and the indicator bars will disappear. - Step 3: Press and hold the button and start to position the device along the surface and scan. - Step 4: When the stud finder detects an object, it will beep continuously and show it on the LCD screen. 7. Note: This stud finder can quickly find metal, joists, beams, pipes, live AC wires behind many types of walls, floors and ceilings. At first glance, it can also be used on popcorn ceilings, plastered walls, textured surfaces, drywall, etc. Except for cement board walls and brick walls, it can also be used on blown ceilings, plastered walls, textured surfaces, drywall, etc.