It is an ideal tool for DIY enthusiasts, professional electricians and decorative users. Detect studs, metal, AC live wires, pipes metal, rivets or fixings in the wall Auto power off function. It will shut down without operation in 30 seconds, and more power will be saved. Quickly detect the center position, convenient to use. LCD display, can be easily read.< /p> Specification: Battery power supply: 6F22 9V battery (not included) Dowel detection depth: 30*30mm wood: 18mm Metal detection depth: dia.25mm iron pipe: 30mm AC live wires: AC 90~250V live wire: 50mm Size: 155*72*28mm/6.1*2.8*1.1in Weight: 191g Package Included: 1 x Wooden Wall Center Finder Note: This does not include other things, color is based on the first picture and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item.