ITEM NAME:MAX3232 RS232 Serial Port To TTL Converter Module DB9 Connector W/ 4 Jump C C1Z2 MAX3232 RS232 Serial Port To TTL Converter Module DB9 Connector W/ 4 Jump C C1Z2 RS232 Serial TO TTL Converter Module This is small RS232 to TTL level serial converter module, suitable for any 3.3v or 5v target devices. Built-in SP3232EEN chip Fully compatible with existing legacy COM port software Easy to use Output signals: VDD, TXD, RXD, CTS, RTS, GND Power input: 3.3V or 5V Compact design. Package Includes: 1 x RS232 Serial TO TTL Converter Module 4 x Jumper Wire Note: Random color, don't accept the specified color. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.