EM100 Serial-to-Ethernet Module

The EM100 is Tibbo's original 10BaseT serial-to-Ethernet converter for onboard installation — it all started from this orange module.

The EM100 has magnetics on-board and requires only one external component — an RJ45 Ethernet connector. This device has the lowest power consumption of all Ethernet devices offered by Tibbo.

The module is fully sealed (potted) for maximum environmental protection.

The EM100 is compatible with Tibbo Device Server Toolkit (TDST) for Windows. TDST includes the Virtual Serial Port Driver (VSPD), which enables you to use the serial port of the module as a remote COM port of your PC. The Linux version of the VSPD is available as well.

Key Features

10 Base-T Ethernet port, magnetics onboard
Fully sealed (potted with epoxy)
5V power



  • 10BaseT Ethernet port with built-in magnetics.
  • One UART (CMOS):
    • Baudrates of up to 115,200bps;
    • TX, RX, RTS, CTS, DTR, and DSR lines;
    • None/even/odd/mark/space parity modes;
    • 7 or 8 bits/character;
    • Full-duplex mode with RTS/CTS flow control;
    • Half-duplex mode with direction control.
  • Four control lines for status LEDs:
    • Two control lines for green and red main status LEDs;
    • Control line for the Ethernet link LED;
    • Control line for the Ethernet collision LED.
  • Power: 50mA @ 5V.
  • Dimensions (LxWxH): 46.2x28x13mm.
  • Fully sealed (potted) housing.
  • Operating temperature range: -10 ~ +70C.
  • Firmware is upgradeable through the serial port or network.
  • CE- and FCC-certified.

Files and Documentation:

SoI FirmwareFor network upgrades: EM_336S.BIN
For serial upgrades: EM_336SN.BIN
DocumentationSerial-over-IP Solutions Manual
EM100 Hardware Manual
CE Certificateem100-ce.pdf
FCC Certificateem100-fcc.pdf