CH340G USB to RS232 TTL Auto Converter Adapter Module for Arduino

The CH340G USB to RS232 TTL Auto Converter Adapter Module for Arduino is a highly reliable and affordable module designed for seamless serial communication between a USB port and TTL-level devices like microcontrollers. This adapter is built around the original CH340G chip — officially recommended by STC — ensuring stable driver support and compatibility across various Windows systems.

With premium gold-finished PCB, durable yellow header pins, and LED indicators for power and data transmission, this module is ideal for programming Arduino boards and debugging embedded systems. It supports voltage selection between 3.3V and 5V, making it suitable for a wide range of devices. RTS and CTS pins are also reserved for advanced control needs.

🔧 Key Features

• CH340G USB to RS232 TTL Auto Converter Adapter
• Genuine CH340G chip ensures stable performance
• Selectable voltage output: 3.3V or 5V via jumper
• LED indicators for PWR, TXD, and RXD signals
• Supports USB to TTL UART communication
• Gold-finish PCB with robust yellow pin headers
• Reserved RTS and CTS pin locations
• Plug-and-play with wide Windows driver support

📐 Technical Specifications

📌 Applications

• Programming Arduino Uno, Nano, Pro Mini
• Serial communication for STM32, ESP8266, ESP32
• Debugging microcontrollers and embedded boards
• STC/8051 series development
• General USB-to-TTL conversion for DIY electronics

💡 Why Choose This Module?

Built with high-quality components and the genuine CH340G chip, the CH340G USB to RS232 TTL Auto Converter ensures stable data transmission and driver compatibility. It’s a compact, cost-effective tool for developers, students, and electronics enthusiasts.

📦 Package Includes

• 1 × CH340G USB to RS232 TTL Auto Converter Adapter Module