1,onboard FT232RL USB to RS232 interface conversion chip.
2,onboard Power and Status indicator light.
3,onboard recoverable fuse, prevent the output current is too large to burn the module.
4,onboard USB male head, convenient to connect the computer.
5,chip pins already all mainly led ,convenient communication with microcomputer.
6,board size: 38.5 (mm) x17.5 (mm).