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RainbowLink 4-Channel USB RS485/RS232/UART Protocol Converter

SKU: TEL0185

RainbowLink is a USB protocol converter designed to streamline testing across multiple serial ports by offering four independent channels: RS485, RS232, and two TTL channels. It eliminates the need for multiple converters and cumbersome wiring setups, providing simultaneous output of three power supplies (12V, 5V, and 3.3V) to support industrial and agricultural sensor testing. Featuring a lever-type quick wiring terminal, RainbowLink simplifies wiring processes and boasts a service life of over 2000 uses. The converter is driver-free on most computers, with intuitive data indicator lights to easily identify port assignments, ensuring a hassle-free experience.

Overview of RainbowLink 4 Channel USB to Serial Converter

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    • Specification

    Parameter Details
    USB interface TYPE-C
    Input voltage 5V
    Baud rate 2400 - 128000
    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. （When connected to the computer's TYPE-C interface, the maximum current is 2A. When connected to the computer's USB-A interface, the maximum current is 500mA.）
    12V: Rated current 800mA.
    size 72mm * 47mm * 23mm

    Pinout

    FAQ

    • What is the total power of the power output?
      The total power of the power output depends on the power input through the TYPEC interface. Usually, the TYPEC interface of a computer can provide an output of 5V 2A, and the USB A port of a computer can provide an output of 5V 0.5A.
    • The computer cannot distinguish which actual port each of the 4 COMs corresponds to. What should I do?
      There are two methods:
      1. Select a COM port randomly on the computer, and then send characters randomly. You will see the corresponding indicator light on the right side light up. At this time, you will know which port it is.
      2. Install the RainbowLink driver. There will be four ports, A, B, C, and D, in the COM list, corresponding to the A, B, C, and D ports on the panel respectively.
    • Is it convenient for lever-type terminal blocks to connect flexible wires?
      It can reliably connect various wires or wire ends such as hard wires, flexible wires, and pin headers.
    • Can the power output end be short-circuited?
      Although RainbowLink has built-in short-circuit protection and overcurrent protection, to avoid damage, try not to short-circuit it.
    • Are the 4 data channels independent of each other and can they communicate with each other?
      The 4 data channels are independent of each other and can communicate independently with USB, but cannot communicate with each other internally. For example, RS485 and TTL1 cannot communicate.

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