Scanner Wall Detector describe: This product can detect the center position of wood rod in the wall, as well as the position of metal and wires 1. The wood rod detection edge display function has three detection levels: the first level can detect the center of the wood rod, and the wall thickness is less than 1/2 inch (13 mm) , and the second level can detect the center of the wood rod and the wall thickness is less than 1 inch (25 mm) Three gears can detect the center of the rod and the wall thickness is less than 1 1/2 inch (38mm) 2. This product can detect iron, lead, aluminum and other metals in the wall, and the detectable range is that the thickness of the wall is less than 2.36 inches (60 mm) 3. This product can detect live wires in the wall and the detection range is within 2 inches (51mm) of the wall thickness 4. All detection functions have an automatic correction function 5. All detection functions have AC warning function 6. This product has an LED display for easy reading 7. Model: TH210 8. Working temperature: 0-40 9. Applicable battery: 6F22 9V battery. 10. Product size: 6.95 x 3 x 15.47 cm. 11. Product net weight: 146g 12. Maximum wood detection depth: 38 mm 13. Max metal detection depth: 30mm 14. Max sensing cable depth: 30mm 15. Storage temperature: -20-50 16. Color: yellow Package includes: 1 wall detector, 1 English manual.