Tibbo DS1101

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  • $30.00
  • Regular price $104.00
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DS1101 Programmable 3.5-channel
RS232 Controller

The DS1101 is a compact Tibbo BASIC/C-programmable controller with Ethernet capability. The DS1101 targets serial-over-IP and serial control applications.

The DS1101 features a multi-channel RS232 port. The device has a single DB9M connector and is priced as a single-port product, yet packs 3.5 independent serial channels.

Another feature of the DS1101 is its software-controlled power output on pin 9 of the DB9 (serial port) connector — you can power an attached serial device directly through the DS1101. Alternatively, the DS1101 itself can be powered through that pin. The device can also be powered via its power jack or the available power-over-Ethernet module*.

In addition, the DS1101 can be equipped with a 96x32 monochrome OLED display.

There are eight LEDs on the device's front: green and red main status LEDs, yellow Ethernet link LED, and five blue LEDs, which can be used for Wi-Fi signal strength indication and other purposes. A buzzer is provided as well.

The DS1101 comes preloaded with a full-featured serial-over-IP (SoI) application that turns the DS1101 into a powerful serial over IP (SoI) device (a.k.a. "device server"). A versatile Modbus Gateway application is also available.


Here is How You Can Use the DS1101

As a Serial-over-IP (SoI) Device

Serial-over-IP conversion is a large part of what we do, and there is an entire section of our website dedicated to serial converters (a.k.a. "serial device servers"). We offer an open-source serial-over-IP (SoI) app that turns the DS1101 into a full-featured RS232-to-IP converter.

As a Modbus

Modbus is everywhere — it is virtually synonymous with industrial control! Our open-source Modbus gateway app allows you to seamlessly interconnect Modbus TCP, Modbus ASCII, and Modbus RTU masters and slaves.

Build Your Own
IoT Solution

The DS1101 is programmable in Tibbo BASIC and Tibbo C. Develop your very own IoT solution from scratch or take inspiration from our open-source applications and code samples published in the Code and Apps section.


Key Features

10/100 Base-T Ethernet port

3.5-channel RS232 port
Optional OLED display
Onboard RTC (no backup battery)
1MB flash for TiOS, application code, and file system
2048-byte EEPROM
Optional power-over-Ethernet (PoE)
Power in/out on DB9 (pin 9)



  • Powered by Tibbo OS (TiOS)
  • 10/100Base-T, auto-MDIX Ethernet port
  • Optional 802.11abgn Wi-Fi interface*
  • 3.5-channel RS232 port on a DB9M connector
    • TX, RX, RTS, CTS, DTR, DSR, DCD lines
    • Baudrates of up to 460,800bps
    • None/even/odd/mark/space parity modes
    • 7 or 8 bits/character
    • RTS/CTS and XON/XOFF flow control
    • Flexible mapping with 15 different options, such as
      • A single channel: RX, TX, CTS, RTS, DSR, and DTR lines
      • 3.5 channels: RX, TX, RX2, TX2, RX3, TX3, and RX4 lines
      • 13 additional arrangements
  • Built-in buzzer
  • Optional 96x32 monochrome OLED display
  • RTC (no backup battery)
  • 22KB SRAM for Tibbo BASIC/C variables and data
  • 1MB flash memory for TiOS, application code, and file system
  • 2048-byte EEPROM for data storage
  • Eight LEDs
    • Green and red main status LEDs
    • Yellow Ethernet link LED
    • Five blue LEDs (for Wi-Fi signal strength indication, etc.)
  • Software-controlled PLL for selecting high or low speed
  • Power: 12VDC (9 ~ 18V)
  • Optional power-over-Ethernet (PoE)*
  • Programmable "12V" power output on pin 9 of the DB9
  • Pin 9 can also be used for "12V" power input
  • Dimensions (LxWxH): 90 x 48 x 25mm
  • Operating temperature range: -5 ~ +70°C
  • Firmware is upgradeable through the serial port or network
  • Tibbo BASIC/C application can be debugged through the Ethernet LAN
  • CE- and FCC-certified

Installation Diagram