CP2102 USB-TTL Board v4.2
Module Pin Description:
1.TXD: CP2102 data transmission pin, usually followed by RXD other modules. TLL level, can not be directly connected to the RS232 level.
2.RXD: CP2102 data receive pins, usually connected to other modules TXD. TLL level, can not be directly connected to the RS232 level.
3.GND: CP2102 ground
4.5v: 5v power output (max 500mA)
5.DTR / RST: Burn arduino pro mini, etc., when the board to provide a reset timing.
6.3.3v: 3.3v Power Output
Feature 1: with a 500mA resettable fuse, short circuit can effectively ensure that the load module or modules for computer damage.
Feature 2: Power / TXD / RXD LEDs listed all, easier to debug