DFRobot TEL0190 Pocket-Sized Debugging Workstation
DFRobot TEL0190 Pocket-Sized Debugging Workstation eliminates the need for multiple dongles and bulky power adapters. The RainbowLink V2 combines four independent communication channels (isolated RS485 and RS232 + 2x TTL) and a versatile power supply (12V/5V/3.3V) into one rugged device. The DFRobot TEL0190 is ideal for field engineering, Internet of Things (IoT) development, and industrial automation.
Features
- Four channels with simultaneous operation
- Channel 1 - RS485 (fully isolated) for industrial PLCs and long-distance sensors
- Channel 2 - RS232 (fully isolated) for legacy hardware and standard serial devices
- Channels 3 and 4 - TTL (UART) for microcontrollers, GPS modules, and sensors
- Integrated portable power supply (12V/5V/3.3V)
- Industrial-grade protection (V2 upgrade)
- Enhanced usability and design
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
Specifications
- RainbowLink V2 (TEL0190) model
- USB Type-C® (5V) input interface
- Four independent channels
- Communication protocols available are one RS485 (isolated), one RS232 (isolated), and two TTL
- 12V power output at 800mA
- Signal and power isolation for RS485 and RS232
- 2400bps to 128000bps baud rate support
- Supports Windows, Linux (including Raspberry Pi), and MacOS operating systems
- 77mm × 57mm × 21mm (fully enclosed PC housing) dimensions
Published: 2026-05-04
| Updated: 2026-05-06