Features FOR MAX3232 CHIP: This is a RS232 to TTL converter module, using for MAX3232 communication chip, working voltage from 3.3V~5V SUPPORT VARIOUS MICROCONTROLLERS: The microcontroller types available for programming are for STC, for STM32, for Renesas MCU 4 INTERFACES: With four interfaces of VCC, GND, RXD and TXD, the line length is 50CM, the link is flexible and easy to use WIDE RANGE OF APPLICATIONS: Used in radio modification, mobile phone flashing, for XBOX360 flashing, GPS, car inspection, DVD flashing, hard disk repair, set top box upgrade COMPATIBLE WITH MANY SYSTEMS: Compatible with for Raspberry Pi and any microcontroller such as for PIC or other systems with TTL serial communication Specification: Item Type: Serial Port Converter Module Line Length: Approx. 50cm / 19.7in Function: RS232 to TTL Working Voltage: 3.3V~5V Four Interfaces: VCC, GND, RXD, TXD Communication Chip: For MAX3232 chip Package List:1 x Serial Port Converter Module Package List 1 x Serial Port Converter Module