Specification Brand : HUAGZIMO BulletPoint1 : 【Product Introduction】: After installation, connect the power supply and adjust the potentiometer until it does not make any sound (when not close to metal). Place the printed board antenna close to the metal, and it should make sound at this time. After moving away from the metal, the sound should be stopped. If the sound cannot be stopped after moving away, the potentiometer should be adjusted counterclockwise slightly and tried again until it meets the requirements. BulletPoint2 : 【With English Installation Instructions】: This electronic kit is not a finished product, it need to be soldered by yourself. You can get detailed and clear instructions by scanning the QR code that comes with the package. If you have any questions, please contact us first for professional help. BulletPoint3 : 【Great Soldering Science Project】: This soldering DIY kit help you understand the basics of working with printed circuit boards and become familiar with a variety of electronic components, and practice soldering skills enjoyably for you and your kids, or students, or DIYers. BulletPoint4 : 【Easy to Assemble】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. And you can refer the marks on PCB board to soldering each component. If it can't work after soldering, please contact us for support. BulletPoint5 : 【Perfect After-Sale Service】: Please read the User Manual before installing.If any components are missing, please contact us for replacements. IncludedComponents : Metal Detector ItemName : Metal Detector Soldering Practice Kit Soldering Projects Teaching Supplies DC 3V-5V DIY Electronic DIY Kits HUAGZIMO ItemPackageDimensions_Height : 18.0086 centimeters ItemPackageDimensions_Length : 2.5908 centimeters ItemPackageDimensions_Width : 13.4874 centimeters ItemTypeKeyword : soldering-stations Manufacturer : HUAGZIMO Material : Metal ModelName : Metal Detector ModelNumber : Metal Detector NumberOfChannels : 1 PowerSourceType : dc ProductDescription : 【With English Installation Instructions】: This electronic kit is not a finished product, it need to be soldered by yourself. You can get detailed and clear instructions by scanning the QR code that comes with the package. If you have any questions, please contact us first for professional help. 【Great Soldering Science Project】: This soldering DIY kit help you understand the basics of working with printed circuit boards and become familiar with a variety of electronic components, and practice soldering skills enjoyably for you and your kids, or students, or DIYers. 【Easy to Assemble】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. And you can refer the marks on PCB board to soldering each component. If it can't work after soldering, please contact us for support. 【Perfect After-Sale Service】: Please read the User Manual before installing. Our policy is to make our customers happy. If any components are missing, please contact us for replacements.