USB Type-C to TTL Serial Adapter, CP2102 USB to UART Converter Multi-Level 1.8V/2.5V/3.3V/5V, CTS/RTS + DTR/DSR/DCD, ESD & Overcurrent Protection, Win/Mac/Linux/Android

Overview This USB Type-C to TTL Serial Adapter (CP2102 version) is a compact and reliable USB to UART / USB to TTL converter for embedded development, debugging, and production test. With a built-in multi-level voltage switching design, both VCC and signal level can be selected by DIP switch between 1.8V / 2.5V / 3.3V / 5V—no need to disconnect power while changing the voltage level, making it fast for engineers who work with different TTL serial targets. Unlike common transistor level-shift solutions, this adapter uses a chip-based conversion so the low level can reach a true 0V, improving logic compatibility and signal integrity for TTL UART communication. The board also provides hardware flow control with exposed CTS and RTS pins, and the CP2102/FT232 designs additionally support DTR, DSR, DCD signals to meet more advanced serial control requirements (boot/reset automation, handshaking, and device detection). For reliability and safety, the USB interface includes ESD protection and overcurrent protection, and the RX/TX/CTS/RTS LEDs plus power indicator help you quickly verify USB UART data activity during debugging. Compatible with major operating systems including Windows 11/10/8/7, Mac OS, Linux, and Android, this USB to TTL Serial Converter is ideal for serial console access, firmware flashing, and stable UART communication without any “wireless/RF” function or radio components. Part List 1. USB TTL Multi Level-CP2102-USB C x1 2. 20cm Female to Female Dupont Wire 10Pin x1

• Multi-Level USB to TTL: Built-in DIP switch for 1.8V/2.5V/3.3V/5V VCC & signal level switching—ideal USB to UART debugging for low-voltage MCUs and serial devices.
• CP2102 USB to UART Converter: Stable USB UART bridge with wide baud-rate support 300bps–1Mbps (CP2102 version), great for firmware flashing, console logging, and serial communication.
• True 0V Low-Level Translation: Uses a chip-based level shifting design so low level reaches 0V (not limited by transistor voltage drop) for cleaner TTL serial logic and better compatibility.
• Hardware Flow Control Pins: Exposes CTS/RTS pins for hardware flow control; CP2102/FT232 designs also bring out DTR/DSR/DCD for more flexible USB to TTL control signaling.
• Protection + LED Indicators: USB port includes ESD protection & overcurrent protection; RX/TX/CTS/RTS LEDs plus power indicator make USB to UART status visible; supports Windows 11/10/8/7, Mac, Linux, Android.