Feature

●The RS232 to TTL conversion shield is specially designed for R3 control board, very convenient to change the serial port to RS232 interface
●The shield comes with a DB9 connector (male head) to easily connect a variety of RS232 interface devices. RS232 pin header for connection and debugging is also included
●It also has a soldering area for DIY design so you can get the most out of this shield. Shield has programming mode control switch. Turn off when you write the program to R3. Normally turn ON

Description