* This is a Tibbo BASIC/C-programmable device and its function depends on the loaded app.
We offer many ready-to-use apps, among them a serial-over-IP (SoI) app, Modbus Gateway app, and Sensor Hub app.
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Tibbo Serial-over-IP Devices (Serial Device Servers)

Tibbo offers two lines of external serial-over-IP devices: the DS110x family of serial controllers and Tibbo Project System (TPS) devices in select configurations.

Both the DS110x and TPS offerings comprise general-purpose BASIC/C-programmable devices running our open-source serial-over-IP (SoI) application.

All Tibbo Device Servers are compatible with Tibbo Device Server Toolkit (TDST) for Windows. TDST includes a Virtual Serial Port Driver (VSPD), which enables you to use the serial ports of Device Servers as remote COM ports of your PC. The Linux version of the VSPD is available as well.

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SoI on DS110X Programmable Serial Controllers

The DS1100, DS1101, and DS1102 are Tibbo BASIC/C-programmable serial controllers capable of running our open-source serial-over-IP (SoI) application.

The DS1100 is an entry-level, economically priced serial controller with a standard RS232 port.

The DS1101 is a powerful serial controller with a 3.5-channel RS232 port.

The DS1102 is equipped with a multiprotocol port that can be configured as a 3-channel RS232 port, two-channel RS422 port, or a single-channel RS485 port.

All three devices can be equipped with the available PoE module. In addition, the DS1101 and DS1102 can be supplied with a Wi-Fi port and OLED display.

Channels: Squeezing Multiple Serial Ports Onto a Single DB9

Devices supporting this feature have a single DB9M connector and are priced as single-port products, yet pack several independent serial channels.

Have no use for those DSR and DTR lines? Turn them into RX and TX lines of an additional serial channel. Don't want CTS and RTS either? That's one more RX/TX pair!

Our serial-over-IP (SoI) application defines 15 different configurations or "port mappings" to choose from, starting from a standard single-channel configuration (RX, TX, CTS, RTS, DSR, DTR, and DCD) and ending with the 3.5-channel setup (RX, TX, RX2, TX2, RX3, TX3, and RX4).

Splitting wires can be conveniently carried out with the TB1100 adaptor.

Comparison Table

Serial Interface
Single-channel RS2323.5-channel RS2323-channel RS232/
2-channel RS422/
1-channel RS485
Economical (T2000)Baseline (T1000)
Power inin/out
(SoI application can control
the power output)
Ethernet Interface
OLED Display
-Optional, SoI application displays network conditions, serial communications parameters, and other useful information

TPS-based SoI Devices

Our Tibbo Project System (TPS) is an ideal platform for creating multi-port Serial Device Servers. With TPS, you don't have to settle for a "close enough" match to what you are looking for. Need exactly three serial ports? Define a TPS configuration with just three ports! Require a device with two RS232 and two RS485 ports? No problem. Want to power your Device Server from a PoE source? There is a Tibbit for this!

To get you started, we've created several standard Device Server configurations.

Available serial
port types
TTL, simple RS232 (TX, RX, RTS, and CTS only), universal RS232/422/485 ports
(RS232: TX, RX, RTS, CTS, DTR, DSR; RS422: +/– TX, +/– RX, +/– RTS, +/– CTS;
RS485: +/– TX/RX, half-duplex)
Max. number of
serial ports
4 ports, available with DB9M or terminal block connectors2 ports with DB9M connectors (all lines present), or
4 ports with terminal blocks (reduced number of lines)
Ethernet Port
Optional, reduces the number of available serial ports
Power options
12V, 24V, PoE
LED status indication
Two general status LEDs, one Ethernet link LED, five LEDs
for Wi-Fi/GPRS status and signal strength indication

Earlier Models of Tibbo Serial Device Servers

Presented above are our current Device Servers based on Tibbo's BASIC/C-programmable controllers.

Earlier Device Server models are still in production and can be found in our Online Store.

Here they are:

DS202 Device Server
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