ALMOCN MAX7219 Dot Matrix Display Module Single Chip Control LED DIY Kit for Arduino with 5pin Line (4pcs)

Module Operating voltage : 5V Module size : 5 cm X 3.2 cm wide X 1.5 cm high Single module can drive a common cathode 8 * 8 dot matrix Holes with four screws , diameter 3mm, can be fixed by using our M3 studs Modules with input and output interfaces , support for cascading multiple modules