Multifunctional Wall Stud Wire Metal Detector Functions: 1. Detects 3 wood studs at a depth of 0.5 inches 2. Detects 3 wood studs at a depth of 1 inch 3. Detects 3 wood studs at a depth of 1.5 inches 4. Metal detection 5. AC power 6. Metal detection depth Parameters: 1. Alarm mode: sound and light 2. Detection frequency: 1 MHz 3. Operating range: 0-0.06 meters 4. Operating voltage: 9V 5. Applicable to: wood, metal, and AC wiring in walls, floors, and ceilings 6. Battery type: 9V 6F22 (battery not included) 7. Application: quickly locates wood, metal, and AC wiring hidden in walls, floors, and ceilings 8. Works on lath, wallpaper, wood floors, soundproof ceilings, painted walls, and more, eliminating hazards when installing TVs, cabinets, garage racks, and more. 9. Don't worry about touching live wires; exposed AC power cords are clearly marked in all modes to prevent potentially serious accidents. 10. Easily view your results on the bright LCD screen. 11. Dimensions: 16.7 x 6.6 x 3.4 cm