Electrical parts provide students grades 2 and up (age 7+) with hands-on experience designing and building models of working electrical circuitsnSnap-together parts require no tools and ensure correct connectionsnIncludes 30 parts, and instructions for over 100 projects, including working models of a photo sensor, a flashing light, and an adjustable-volume sirennNOTE: Requires 2 AA batteries (sold separately); Also Kindly refer the Instructional Video from the Image Section and User Manual from the Technical Specification before use which is highly recommended.nAwards: The National Parenting Center-Seal of Approval, Dr. Toy 100 Best Childrenu0026#39;s Products, Dr Toy Best Educational ProductsnValuable component to a rounded STEM curriculumnBuild working models of a photo sensor, a flashing light, and an adjustable-volume siren. More than 100 exciting projects in all with included 30+ snap together partsnElectrical components provide students ages 8+ with hands-on experience designing and building models of working electrical circuitsnClear and concise illustrated manual included and available onlinen