Music LED Light Assembly Kit for Soldering Practice and Circuit Understanding

Interactive Hand Cranked Flashlight for Learning About Renewable Energy

Unique Hand Cranked Flashlight for Practical Learning About Energy Conversion

Compact Time Delay Relay Module 60mm x 35mm x 20mm For 5V 12V 24V Circuits

Hand Cranked Generator STEM Kit for Children Learn Hands On Electricity Basics

DIY Hand Cranked Flashlight with Extendable Rod for Stable Power Output

4PCS Switch Board 15x15mm DC 2.2-5V Single Push Button for Sensor Circuits

Manual Hand Cranked Generator Kit for Electrical Science Projects and Learning