How to connect the SMS receiver of LED display screen to LED display screen?

Rotating LED screen short message receiver is a short message receiving module, which sends the file originally sent to the screen through 232 serial port to the screen by short message. The file packet sent by the mobile phone is decoded into the format needed for screen display, read and played on the main control card. There is no need to study how to connect. Just tell the supplier what interface you need when purchasing. It's simple.