Check the listing for details. Stud Finder Wall Scanner. Color: Gray, Condition: Open box. Listed at 30.00 USD. This gray SH402 stud detector wall scanner is a great tool for any enthusiast or professionals. Made in China, it features advanced sensors and probes that accurately detect studs and other objects hidden behind walls. Its compact size and ergonomic design make it easy to handle and use, while its reliable performance ensures you'll always get the job done. Use this stud finder to locate wood and metal studs, pipes, cables and other obstacles before drilling or cutting into walls. Its color-coded LED indicators and audio cues provide clear information, even in dimly lit environments. Whether you're renovating your home, installing shelves or cabinets, or working on a construction project, this stud finder is a must-have tool that will save you time, effort, and headaches.