Customize R/C port:
RTS:Connect R/C port to RTS, it can flash ESP8266 module(such as: ESP-01 02 … 12F)
CTS:Connect R/C port to CTS, it can flash Arduino boards(such as: Arduino pro mini)
Operating voltage:
5V (The max current depends on your USB port, usually 500mA)
3.3V (Using LDO, 300mA MAX)
Package included:
5 x Wemos® CH340G Breakout 5V 3.3V USB To Serial Module