- Equipped with three LEDs: TXD LED, RXD LED, and power LED, allowing for easy monitoring of device status. - Reserved pad for additional functions, ensuring future expandability and versatility. - Features 500mA recovery fuses, providing reverse connection protection to prevent damage from incorrect wiring. - Offers three power supply options for flexibility: 5V external power supply, 3.3V external power supply, or an adjustable external power supply (3.3V-5V required). This product is ideal for various applications including: - Developing and debugging interfaces in microcontroller projects, ensuring reliable communication with visual feedback. - Expanding electronic setups where power supply flexibility is essential, allowing for seamless integration with existing components. - Safely prototyping with confidence, thanks to built-in protection against reverse polarity connections. With robust performance, high compatibility, and a compact design, this product stands out as a reliable choice for hobbyists and professionals alike.