RS232 to TTL converter board DCE with Female DB9 3.3V to 5V Includes ICL3232 or compatible IC with Capacitors Supports 3V to 5.5V (based on regulated DC voltage supplied to the board) DB9 Female Connector (RS-232) Suitable for use with most microcontrollers, 300 to 115200 bauds Board Dimensions: 32 x 37 mm