Brand Name: ZJMZYM - This teaching instrument is crafted by ZJMZYM, a trusted name in educational tools, ensuring high-quality and durability for classroom use. Origin: Mainland China - Manufactured with precision and care in Mainland China, this demonstrator model adheres to rigorous standards to provide an accurate learning experience. Subject: PHYSICS - Specifically designed for physics education, this demonstrator helps students understand the principles of electromagnetism through hands-on learning. Model Number: LD3565 - The model LD3565 is a specialized tool in the ZJMZYM lineup, designed to aid educators and students in demonstrating the functionalities of electromagnetic relays. High-concerned chemical: None - Safe for classroom use, this product does not contain any high-concern chemicals, ensuring a safe learning environment for students. Description/Features: This package includes one Electromagnetic Relay Demonstrator Teaching Instrument, ideal for educational purposes. Please note that this product is subject to ongoing upgrades in both functionality and design to enhance user experience. As such, the appearance and color of the item may vary. Specifications: Contents: 1 Electromagnetic Relay Demonstrator Teaching Instrument Note: The product's appearance and color are subject to change without prior notice. Please consider this before placing an order if specific colors or designs are important to you. Color: As Shown Material: Plastic+Metal Package Contents: A model Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.