Reliable CH340 USB to Serial TTL adapter with selectable 5 V/3.3 V jumper, ideal for Arduino, ESP8266/ESP32, NodeMCU, and embedded systems programming or debugging.
Compact CP2102 USB to Serial (USB-UART) TTL module for reliable, high-speed communication between a computer and microcontrollers. Features 3.3 V and 5 V outputs, making it ideal for Arduino, ESP8266/ESP32, NodeMCU, and embedded development.