Feature
A FTDI chip for flashing code to arduino pro mini, ESP8266 and many more. Instead of that, making a UART connection between MCU or PC is possible. What special about this circuit is build with FTDI chip, a high quality communication chip.
Specification
switchable voltage :5v or 3.3v for easy direct voltage from usb to MCU
USB-RS232-TTL
Package content
1x USB to TTL FTDI FT232RL UART