Onyehn 2pcs MAX7219 Dot Matrix Module(Red Light) 4 in 1 Display for Arduino Microcontroller with 5Pin Line(Christmas Decoration DIY Letters Electronic Display)

Wiring Instructions:
A single module can drive a 8×8 dot matrix common cathode
Operating Voltage: 5V
Dimensions: 12.8X3.3X1.3cm(5.04X1.3X0.51in)
Fixing screws with 64 holes with a diameter 3mm
Module with input and output interfaces, support for cascading multiple modules
The left side of the module to the input port, the right to an output port
When the control of a single module, simply input port connected to CPU
When a plurality of cascaded modules, input and output termination CPU, an input terminal of the second output end of the first module a module, the first two modules of the input terminal of the three termination modules, and so on…
51 microcontrollers, for example: VCC 5V
GND GND
DIN P2.2
CS P2.1
CLK P2.0
Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.
And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package list:
2x MAX7219 Dot Matrix Module 4-in-1
2x 20cm DuPont line 5pin

Make sure this fits by entering your model number.
Dimension of Module: 12.8X3.3X1.3cm(5.04X1.3X0.51in)
Operating voltage: 5V
A single module can drive a 8x 8 dot matrix common cathode
64 fixed screw holes with 3mm in its diameter
Equipped with input and output interfaces, support for multiple modules to cascade