Electromagnetic relay physics instrument kit designed for handson exploration of electromagnetism. This simple and effective DIY kit makes the principles of coils, magnetic fields, and relay switching easy to see and understand. Key benefits Clear demonstration of electromagnetism: Shows how an electromagnetic relay works for intuitive, practical learning. Handson learning: Ideal for DIY experiments that reinforce basic physical science concepts through direct observation and manipulation. Durable construction: Built with metal components to ensure longevity and reliable functionality during repeated use. Compact and easy to handle: Base measures 23 cm x 5 cm x 20 cm, making the setup portable and allowing students to clearly observe the condition and movement of all components. Function and compatibility Function: Demonstrates relay activation and component interaction in simple circuits, suitable for classroom demonstrations and individual experiments. Compatibility: Appropriate for home use, school classes, and projects for children in middle school. Also suitable as a practical gift for birthdays and holiday occasions. Practical applications and use scenarios Classroom demonstration: Use during lessons to visually explain electromagnetic principles, relay operation, and basic circuit behavior to a group of students. Home science project: A middle schooler can assemble and test the kit at home to complete homework assignments or prepare for science fair experiments. Gift for learning: Given as a birthday or Christmas present to encourage handson STEM exploration and to support experiential learning outside school. What is included and performance A compact relay experiment base with visible mechanical and electrical parts for step by step learning and observation. Metal construction supports repeated demonstrations and practical use without compromising component visibility or movement. This kit provides a straightforward, durable, and portable way to teach and learn the fundamentals of electromagnetism through active experimentation.