MAX7219 Dot Matrix LED Display Module Red (OT3584)

convenient four-wire serial interface can connect all common microprocessors.
MAX7219 also allows the user to select any of the data codes or non-coded.
The whole device is provided with a 150μA low-power shutdown mode, analog and digital brightness control, a scan limit register allows the user to use 1-8 bits of data
Requires only three IO ports can drive a dot! No blinking dot matrix display! Support cascade!
Module parameters:
1 single module can drive common cathode 8*8 dot matrix;
2 module Operating voltage: 5V
3 Module size: 5cm X 3.2cm wide X 1.5cm high
4 holes with four screws, diameter 3mm, can be fixed using our M3 bolts
5 modules with input and output interfaces, support cascading multiple modules