JUXINICE
JUXINICE 2Pack DB9 Serial Breakout Board, Solder-Free D-SUB 9-Pin Male & Female RS232/485 Terminal Adapter with Metal Shell, Bolts, Nuts & Screwdriver
Several Ways to Connect DB9 to RS232 and RS485:For RS232 , connect to pins 2, 3, and 5. Pin 2 is Receive (RX), Pin 3 is Transmit (TX), and Pin 5 is Ground (GND). The other pins do not need to be connected. For RS485 , connection is usually made to pins 1 & 2 or 3 & 8. RS485 uses differential signa...
$15.99