Description:
The RainbowLink V2 is a versatile 4-channel USB to serial converter designed for industrial, embedded, and field-testing applications. Unlike standard USB converters, it features a built-in boost power supply, converting USB 5V input into 12V (800mA), 5V (2A), and 3.3V (200mA) outputs—allowing users to power and debug sensors, PLCs, and microcontrollers directly from a laptop without an external power source.
With four independent channels, RainbowLink V2 replaces multiple USB adapters:
- Channel 1 – RS485 (Isolated): For long-distance industrial PLCs and sensors.
- Channel 2 – RS232 (Isolated): For legacy devices and standard serial hardware.
- Channels 3 & 4 – TTL/UART: For microcontrollers, GPS modules, and other TTL devices.
Engineered for harsh environments, the V2 features full signal and power isolation for RS485 and RS232, protecting computers and prototypes from voltage surges, ground loops, and electrical noise. Additional features include smart port naming for easy identification in Device Manager and lever-type spring terminals for fast, tool-free wiring.
Ideal for outdoor sensor testing, industrial maintenance, R&D prototyping, and embedded system debugging, RainbowLink V2 combines reliability, safety, and versatility in a compact 77mm × 57mm × 21mm enclosure compatible with Windows, Linux, macOS, and Raspberry Pi.
Integrated Portable Power Supply
Facilitates testing of 12V industrial sensors in the field. Unlike standard converters that only transmit data, RainbowLink V2 features a built-in boost converter. The device converts USB 5V input into 12V (800mA), 5V (2A), and 3.3V (200mA) outputs.
- Application: Powers and debugs water level sensors, soil meters, or PLCs directly from a laptop USB port without requiring an external bench power supply or wall outlet.
Four Channels, Simultaneous Operation
Replaces four separate USB dongles with one robust device. All channels operate independently:
- Channel 1: RS485 (Fully Isolated) – For industrial PLCs and long-distance sensors.
- Channel 2: RS232 (Fully Isolated) – For legacy hardware and standard serial devices.
- Channel 3 & 4: TTL (UART) – For microcontrollers, GPS modules, and sensors.
Figure: Four Channels of RainbowLink V2
Industrial-Grade Protection (V2 Upgrade)
Prevents damage to connected computing equipment. The V2 edition features Full Signal & Power Isolation for the RS485 and RS232 interfaces. This critical feature blocks high-voltage surges, ground loops, and electrical noise, ensuring computers and prototypes remain safe during harsh industrial debugging.
Camparsion Table: Generic USB Converter VS RainbowLink V1 VS RainbowLink V2
Enhanced Usability and Design
- Smart Port Naming: The dedicated driver clearly names the ports in Device Manager (e.g., "RainbowLink RS485"), enabling precise identification of the correct COM port without guesswork.
- Tool-Free Wiring: Equipped with high-quality lever-type spring terminals. Allows for quick connections by simply flipping the lever, inserting the wire (12-22AWG), and snapping it shut.
Applications:
- Outdoor Sensor Testing: Debugging 12V RS485 soil sensors using only a laptop.
- Industrial Maintenance: Safely connecting to high-voltage PLCs via isolated RS232.
- R&D Prototyping: Monitoring data from an ESP32 (TTL) and a GPS module (TTL) simultaneously.
Specification:
- Model: RainbowLink V2 (TEL0190)
- Input Interface: USB Type-C (5V)
- Total Channels: 4 Independent Channels
- Communication Protocols: 1x RS485 (Isolated), 1x RS232 (Isolated), 2x TTL
- Power Output: 12V @ 800mA
- Isolation Voltage: Signal & Power Isolation (for RS485 & RS232)
- Baud Rate Support: 2400bps - 128000bps
- Operating Systems: Windows, Linux (including Raspberry Pi), MacOS
- Dimensions: 77mm × 57mm × 21mm (Fully Enclosed PC Housing)
Documents:
Product Includes:
- RainbowLink V2 4 Channel USB to Serial Converter x1
Shipping rates Australia wide and New Zealand
FAQ:
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