• Electronic component with USB cable on a white background
  • Two USB-to-serial adapter boards on a white background
  • CH340G RS232 to TTL module with USB connection, featuring durable yellow pins and upgraded connection for serial communication.
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25 sales

CH340 USB to TTL Serial Adapter Module (3.3V/5V)

CH340 USB to TTL Serial Adapter Module (3.3V/5V)

HK$20.00
HK$20.00
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Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

Effortlessly connect your microcontroller projects to your computer with our reliable CH340 USB to TTL Serial Adapter. This compact module is the perfect tool for programming Arduino Pro Mini, ESP8266/ESP32 modules, unbricking routers, or communicating with any TTL serial device directly from a USB port.

Based on the stable CH340G chip, this adapter avoids the common driver and compatibility issues found in older chips like the PL2303, ensuring a smooth plug-and-play experience.

Key Features:

  • Reliable CH340G Chip: Utilizes the industry-proven CH340G IC, ensuring stable performance and broad compatibility across different computers and operating systems.
  • Selectable Logic Levels: Easily switch between and power and logic levels using the onboard jumper. This makes it versatile enough to work with a wide range of microcontrollers and peripherals.
  • On-board Status LEDs: Features Power (PWR), Transmit (TXD), and Receive (RXD) LEDs, allowing you to visually monitor the module's status and data activity at a glance.
  • High-Quality Construction: Built with a gold-plated USB connector and durable yellow pin headers for a solid connection and long-lasting use.
  • Broad OS Compatibility: Offers seamless driver support for modern operating systems including Windows (7/8/10/11), macOS, and Linux.

Common Applications:

  • Programming Arduino boards (Pro Mini, LilyPad)
  • Communicating with ESP8266 and ESP32 Wi-Fi modules
  • Serial communication with Raspberry Pi
  • Configuring or unbricking routers and other networking hardware
  • General-purpose serial communication for debugging electronics projects

Pinout:

  • 5V: Provides output from the USB port.
  • VCC: Power output, connected to either or based on the jumper setting.
  • 3V3: Provides output.
  • TXD: Transmit Data. Connect to the RX pin of your microcontroller.
  • RXD: Receive Data. Connect to the TX pin of your microcontroller.
  • GND: Common Ground.
  • (RTS & CTS): Pins available for hardware flow control if needed.

What's Included:

  • 1 x CH340G USB to TTL Serial Adapter Module
  • 1 x 4-Pin Female-to-Female Jumper Wire Cable

Driver Download:

If your system does not automatically install the driver, you can download it from the official WCH website: http://www.wch-ic.com/downloads/file/177.html

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