Features: 1. EASY TO INSTALL AND USE: 8x8 LED dot matrix module display kit is an easy to install, easy to connect, extensible 8x8 dot matrix display system 2. CHIP APPLICATION: The module adopts high speed 74HC595 series and conversion chip, can be cascaded application display, working voltage for DC5V 3. SPI INTERFACE: Only three signal cables are needed to drive multiple 8x8 dot matrix screens, greatly saving your precious controller I O resources 4. CLEAR DISPLAY: Update the display after the transmission of all column signals, bring bright display and high reliability 5. APPLICABLE MODEL: Applicable to 328 controller and sensor expansion board, etc., also applicable to other controllers and expansion boards Specification Item Type: LED Matrix Control Module Production Process: FR4 double sided tin spray Technical Support: Can cascade application display Operating Temperature: 10℃-30℃ Operating Humidity: 10%-90% without condensation Package List 1 x Light Board2 x Pin Header1 x Terminal