A MAX7219 LED matrix module

Additional information specifications (LED matrix 8*8): manufacturer: OasisROSH: working LEDs: red background: black type: common cathode wavelength: 625 – 630 nanometers power supply voltage: 5 volts current draw: 20 milliamps dimensions: 5*3.2*1.5 cm with 5 screw holes, 3mm opening, using M3 Tongzhu fixed module with input and output interfaces, and supports multiple units. The article is about the LED light-emitting diode matrix (LED MATRIX MAX7219).