The Kitronik Dark Activated Colour Changing Night Light Kit is an easy build electronics project that automatically illuminates a colour-changing LED when the light sensor detects darkness. Perfect for educational purposes, this kit includes a light-activated switch board featuring a colour-changing LED.Features: Automatically cycles through various LED colour patterns in darkness Uses a colour-changing (rainbow) LED and a light sensor for activation Ideal for learning about light sensing and electronics construction Contents: 1 x 1MΩ Potentiometer 2 x BC337 NPN Transistors 1 x 220Ω Resistor 1 x Phototransistor 1 x Colour Changing (Rainbow) LED 1 x PP3 Battery Clip Lead 1 x 4AA Battery Holder 1 x Night Light PCB Dimensions:PCB Length: 53mmPCB Width: 25.5mmRequires: 4 x AA Batteries, soldering iron, solder, and wire cutters.Additional Resources: Build Instructions (PDF), Teaching Notes (PDF), Autodesk files, and 3D CAD Files.Note: This kit requires soldering.