- USB to RS232, USB to RS485, and USB to TTL (UART) converter using the original FT232RL for fast communication, stable operation, and broad compatibility with serial interfaces. - Onboard unibody power supply isolation provides a stable isolated voltage, and there is no need for an extra power supply for the isolated terminal, simplifying setup and reducing ground loop issues. - Onboard TVS (Transient Voltage Suppressor) protects the circuit by effectively suppressing surge voltages and transient spikes, enhancing reliability and longevity. - Function and compatibility: supports common serial protocols and interfaces via a single USB connection, leveraging the FT232RL for reliable driver support and broad applicability. - Protection and performance: integrated isolation and transient suppression improve safety and resilience in demanding environments without additional power supplies or external protection modules. - Use scenarios: - Connect a PC to legacy RS232 devices such as serial printers, CNC controllers, or measurement instruments for data acquisition and control. - Build RS485 multi-device networks for Modbus RTU or other industrial controls, sensors, and remote equipment with reliable communication over longer runs. - Program and debug microcontrollers and embedded systems using TTL UART through a convenient USB interface without external power adapters. - Practical advantages: compact integration of USB interface, isolation, and protection in a single module enhances ease of use, reduces wiring complexity, and improves protection in mixed USB and serial environments.