CH340 USB to TTL (Serial) HW 597 Converter Module

A simple and reliable USB to Serial Converter with selectable voltage through an easy-to-use jumper. Ideal for Arduino, DIY electronics, and embedded projects.

Specifications:

• Supports 3.3V and 5V TTL voltages
• Converts TTL logic levels to computer RS232 levels
• Power supplies: 5V, 3.3V, GND (minimum)
• RX (3.3V–5V)
• TX (3.3V–5V)

Features:

• Selectable voltage using the supplied jumper: configure for 5V or 3.3V
• Defaults to 3.3V when the jumper is not connected
• For 5V operation, place the jumper between Vcc and 5V
• Safe switching—disconnect from the computer before changing voltage

Downloads:

• Windows Driver
• Mac OSX Driver
• Linux Driver
• Android Driver

Note: On some Mac devices, users report driver instability. For macOS Mojave and later, no driver installation is needed as they are pre-installed.