Features: High Integration LED Display Module:Built with chip, this 8digit LED display module directly drives 8digit tube or 8x8 dot , simplifying circuit design for efficient prototyping and projects. SPI InterfaceS for Easy Connectivity:Featuring SPI Interfaces, it ensures fast and stable data transmission when connecting to microcontrollers. Double Voltages Compatibility :Supports 5V and 3.3V power input, making it versatile for use with various control platforms and electronics setups. Energy Efficient & Cascadable Design:Low power consumption enables prolonged operate, while cascading support allows multiple modules to expand display capacity for complex applications. Compactly & Durability Construction:With a lightweight metal PCB structure, it’s ideal for digital clocks, counters, and real time environmental monitoring in labs or maker projects. Specifications: Component:PCB, metal Size:Approx.71X22mm/2.8X0.87In Option Color: blue,red; Working voltages: DC5V/3.3V 100mA ~800mA; Communication interfaces: SPI(DIN, CLK, LOAD) Applicable scenario:Electronic Projects,Instrumentation, Package Includes: 2pcs Digital LED Display Module note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.