Portable wall tester, stud finder, metal joist detector, handheld screw edge detector with LED indicator

Features: 1. Made from high-quality materials, impact and wear resistant, offering a long service life. 2. Uses an electronic signal to locate the edges of a stud or joist. Its signal can penetrate drywall and plywood, and the designed depth can reach 3/4 inch. 3. Easy to use: when it detects the stud edges, the red LED lights up and a beep sounds. Use the convenient pencil notch on top of the device to mark the stud edges. 4. Repeat on the other side of the stud. Working from the opposite direction, mark the other stud edges. The middle of the two marks indicates the center of the stud. 5. Wide range of applications, suitable for various wall surfaces such as wall coverings, wallpapered wood floors, soundproof ceilings, painted walls, etc. 6. Note: During calibration, the stud finder cannot be placed directly on a stud, a dense material such as metal, or on a wet or newly painted area, otherwise it will not be calibrated correctly. Specifications: This wall-mounted metal detector is made of high-quality, shock-resistant, and wear-resistant material, ensuring a long service life. It uses an electronic signal to locate the edges of a stud or joist, and its signal can penetrate drywall and plywood, with a detection depth of up to 3/4 inch. Easy to use, when it detects the stud edges, the red LED illuminates and a beep sounds. Wide range of applications, suitable for various wall finishes such as wall coverings, upholstered wood floors, soundproof ceilings, painted walls, etc. Features: Made from high-quality materials, impact and wear resistant, providing a long service life. Uses an electronic signal to locate the edges of a stud or joist, and its signal can penetrate drywall and plywood, with a designed depth of up to 3/4 inch. Easy to install. During use, when it detects the stud edges, the red LED illuminates and a beep sounds. Use the convenient pencil notch on top of the device to mark the stud edges. Repeat on the other side of the stud. Working from the opposite direction, mark the remaining stud edges. The midpoint of the two marks indicates the center of the stud. Wide applications, suitable for various wall appearances such as wall coverings, wallpapered wood floors, soundproof ceilings, painted walls, etc. Note: When calibrating, the stud finder cannot be placed directly on a stud, a dense material such as metal, or on a wet or newly painted area, otherwise it will not calibrate correctly. Specifications: Name: Wall Metal Detector Material: Plastic Battery: 1 x 9V battery (not included) Color: Red, Orange, Yellow, Blue (optional) Item Size: 136 * 23 * 50 mm / 5.35 * 0.91 * 1.97 inches Item Weight: 80 g/ounce Package Size: 144 * 26 * 55 mm / 5.67 * 1.02 * 2.17 inches Package Weight: 90 g / 2.82 ounces Packing List: 1 * Wall-Mounted Metal Detector