Fangrui Product Details 1. - Operating At 5v, This Module Supports Cascading Multiple Units, Enabling Expanded Display Capabilities While Maintaining High Performance. Ideal For Complex Projects That Require Versatile Display Options. 2. - Designed For Electronics Enthusiasts, Engineers, Educators, And Developers, This Module Is A Solution For Those Looking To Innovate In Digital Display Technology. 3. - For Applications Such As Information Display Screens, Clock Displays, And Electronic Teaching Experiments, This Module Enhances Any Project That Necessitates Precise Led Control And Visualization. 4. - The Dots Matrixes Module Features An 8-dot Display That Integrates Seamlessly With Microcontrollers, Providing Efficient Control Over 8x8 Dot Matrix Displays For Dynamic And Clear Visual Output. 5. Key Features: 6. - Voltage: 5v 7. - Compatibility: Works With Various Microcontrollers 8. - Size: Compact Design For Easy Integration 9. - Performance: High-quality Led Control For Precise Visualization 10. Use Cases: 11. Create Interactive Information Panels For Exhibitions And Events. 12. Develop Educational Tools For Teaching Electronics And Programming Concepts. 13. Build Custom Clock Displays With Programmable Features For Personal Or Commercial Use.