
RainbowLink is an USB protocol converter designed specifically for IoT and industrial applications. It provides robust support for multi-channel serial communication and power output. With 4 independent channels, including RS485, RS232, and two TTL channels, this USB protocol converter offers engineers an integrated solution to manage multiple communication protocols within the IoT ecosystem. This 4-Channel USB to RS485 / RS232 / TTL Serial Converter is compatible with Windows and Linux operating systems and can be used with devices such as LattePanda and Raspberry Pi. In most cases, RainbowLink operates as a plug-and-play device without requiring additional drivers, but optional driver installation enhances its functionality by simplifying device management through unique device identifiers.
In addition, this 4-channel USB to Serial Converter features synchronous 12V, 5V, and 3.3V power outputs, eliminating the need for extra converters or external power sources. This makes it highly suitable for testing and development in various environments, including industrial, agricultural, and laboratory settings.


Quick-Connect Lever Terminals for Easy Wiring
- RainbowLink features lever-type quick-connect terminals, allowing for rapid, reliable wiring without the need for tools or connectors. This innovative design supports over 2000 connect-disconnect cycles and fits both pin headers and sockets, ensuring maximum flexibility.
- The result is a clean, organized setup that reduces preparation time and minimizes the risk of loose connections, essential for reliable test environments.

4 Independent Channels in 1 Device
- RainbowLink combines four isolated communication channels—1×RS485, 1×RS232, and 2×TTL—within a single device. This setup allows engineers to replace multiple converters, streamlining configurations and reducing clutter on workstations.
- Each channel operates independently, enabling simultaneous monitoring and control of multiple serial devices, greatly simplifying complex multi-protocol setups.

Flexible Power Output Options
- RainbowLink offers three voltage output options: 12V/800mA, 5V/2A, and 3.3V/200mA, catering to a wide range of testing requirements. This versatile power solution ensures compatibility with various sensors and devices, especially in field testing environments with limited power supply.
- With RainbowLink, users no longer depend on external power sources, enabling quick and convenient testing of sensors in remote or outdoor settings.

Applications
- Industrial Sensor Testing and Debugging
- Multi-Protocol Device Debugging
- Laboratory and Development Board Debugging
Shipping List
- RainbowLink 4 Channel USB to Serial Converter (RS485 / RS232 / TTL) x1
Specification
RainbowLink is an USB protocol converter designed specifically for IoT and industrial applications. It provides robust support for multi-channel serial communication and power output. With 4 independent channels, including RS485, RS232, and two TTL channels, this USB protocol converter offers engineers an integrated solution to manage multiple communication protocols within the IoT ecosystem. This 4-Channel USB to RS485 / RS232 / TTL Serial Converter is compatible with Windows and Linux operating systems and can be used with devices such as LattePanda and Raspberry Pi. In most cases, RainbowLink operates as a plug-and-play device without requiring additional drivers, but optional driver installation enhances its functionality by simplifying device management through unique device identifiers.
In addition, this 4-channel USB to Serial Converter features synchronous 12V, 5V, and 3.3V power outputs, eliminating the need for extra converters or external power sources. This makes it highly suitable for testing and development in various environments, including industrial, agricultural, and laboratory settings.


Quick-Connect Lever Terminals for Easy Wiring
- RainbowLink features lever-type quick-connect terminals, allowing for rapid, reliable wiring without the need for tools or connectors. This innovative design supports over 2000 connect-disconnect cycles and fits both pin headers and sockets, ensuring maximum flexibility.
- The result is a clean, organized setup that reduces preparation time and minimizes the risk of loose connections, essential for reliable test environments.

4 Independent Channels in 1 Device
- RainbowLink combines four isolated communication channels—1×RS485, 1×RS232, and 2×TTL—within a single device. This setup allows engineers to replace multiple converters, streamlining configurations and reducing clutter on workstations.
- Each channel operates independently, enabling simultaneous monitoring and control of multiple serial devices, greatly simplifying complex multi-protocol setups.

Flexible Power Output Options
- RainbowLink offers three voltage output options: 12V/800mA, 5V/2A, and 3.3V/200mA, catering to a wide range of testing requirements. This versatile power solution ensures compatibility with various sensors and devices, especially in field testing environments with limited power supply.
- With RainbowLink, users no longer depend on external power sources, enabling quick and convenient testing of sensors in remote or outdoor settings.

Applications
- Industrial Sensor Testing and Debugging
- Multi-Protocol Device Debugging
- Laboratory and Development Board Debugging
Shipping List
- RainbowLink 4 Channel USB to Serial Converter (RS485 / RS232 / TTL) x1
Specification
| USB Interface | Type-C |
| Input Voltage | 5V |
| Baud Rate | 2400 - 128,000 bps |
| TTL Level | 3.3V |
| TTL Channels | 2 |
| RS485 Channel | 1 |
| RS232 Channel | 1 |
| Output Voltage | 3.3V: Rated current 200mA; 5V: Directly connected to the Type-C interface (Max 2A when connected to a Type-C port on a computer; Max 500mA when connected to a USB-A port); 12V: Rated current 800mA |
| Compatibility | Supports Windows and Linux; compatible with LattePanda and Raspberry Pi |
| Driver Requirements | Driver-free for basic functionality; installing drivers enhances performance with unique device identifiers |
| Dimensions | 72mm x 47mm x 23mm |










































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