The 4-in-1 stud finder is used to detect the center position of wooden stem, metal position and wire live in the wall of wood, gypsum board and other materials, and it has AC warning function. Features:The green LCD LED backlight screen shows the direction of the target, clear at a glance. It uses an advanced sensor to quickly and accurately locate wire, wood, metal, and AC.4 Scanning Modes: Stud Scan (19mm/0.75 inch), Deep Stud Scan (38mm/1.5 inch), Metal Scan (60mm/2.36 inch), AC Scan (51mm/2 inch). Easy to use with LED display and AC warning function, a practical tool for accurate drilling in home decoration. Applicable to metal pipes, AC wires, wooden beams and rebar. Fit for professional, homeowner, or DIY enthusiasts. Specifications:Type and Color: Onpa, Silver & Black/Button, Silver & Black/Button, Red & Black (Optional)Material: ABS+PVContor: LED Green BacklightPower Supply: 6F22 9V Battery (Not Included)Product Size: 172*76*37mm / 6.77*2.99*1.46in(Napa); 180*80*35mm / 7.09*3.15*1.38in(button)Item Weight: 160g / 5.64oz Package Size: 19*8.3*5cm/7.48*3.27*1.97inPackage Weight: 200g/7.05oz Package List:1*Portable Wall Detector1*User ManualMany questions about Dropshipping services are following:1. How many orders can you handle per day? We are a large company in Shenzhen, China, with a large warehouse that can handle large orders every day. We ship countless packages every day. We can guarantee the order you request.2. How fast can you process orders? We will arrange the shipment as soon as possible after you pay for your order. Priority delivery for dropshipping order3. Can you ship an order without any receipts, invoices and promotional offer inside the package? Absolutely! No invoices, receipts, promotional offer if you leave notes on the order (if you want, we can deliver.)4. If you need other products? We can supply most of the products you need as much as possible1If you have any other questions, please feel free to