It is an ideal tool for DIY enthusiasts, professional electricians and users in the decoration field. Detect studs, metal, live AC cables, metal pipes, rivets or fasteners in walls Auto shut-off function. It will automatically turn off after 30 seconds of inactivity, further saving power. Quickly detect the center position and easy to use. LCD screen, easy to read. Specifications: Battery power supply: 6F22 9V battery (not included) Pin detection depth: wood 30*30mm: 18mm Metal detection depth: iron pipe diameter 25mm: 30mm AC live wire: 90 ~ 250V AC live wire: 50mm Size: 155*72*28mm/6.1*2.8*1.1in Weight: 191g Package includes: Package including 1 x Wooden Wall Center Finder Note: Nothing else is included here. Color is based on the first image. Other pictures only show the effect Due to differences between monitors, the pictures may not reflect the actual color of the item. Due to manual measurement. Please allow for deviations. THANKS! Become very rich