Gigabit Data Diode, 2 channel multiplexed with copper user ports



The GT-xxTDM provides two multiplexed channels of 1000BaseT Ethernet across a unidirectional fibre link.   A totally hardware based solution the GT-xxTDM is a Layer 1 device and operates at wire speed for optimal performance. Desktop or rack-mountable the GT-xxTDM takes data security to new levels.

  • No vulnerable software, firmware, memory or buffers that may otherwise be exploited.
  • Unidirectional fibre link
  • Tamper proof casing
  • Guaranteed one way transmission
  • No physical return path


Item Description

IEEE 802.3ab,z    1000BASE-T, 1000BASE-SX/LX


5.5 lb.  (2.5 Kg) (shipping wt.)


Typical: 100 ~ 240 VAC Auto-ranging wall-mount

Optional: 9 - 48 VDC input + Terminal Block


Operating:    0º C to 50º C

Storage:    -20º C to 70º C


Operating:    10% to 80% RH

Storage:        5% to 90% RH


CE Mark EN60950 & EN55022

FCC Part 15 of Class A


US 21 CFR (J) & EN 60825-1 standards and UL 1950 applications

EN 60950, CE, TUV


12.7 cm    x 20.3 cm    x 4.4 cm   (D x W x H)

Ordering Information

Order Code Description
GT-55TDM Transmit Diode, 2 x 1000BaseTx and 1 fibre (SC m/m) Tx link
GT-55TRM Receive Diode, 2 x 1000Base Tx and 1 fibre (SC m/m) Rx link
GT-31TDM Transmit Diode, 2 x 1000BaseTx and 1 fibre (SC s/m) Tx link
GT-31TRM Receive Diode, 2 x 1000Base Tx and 1 fibre (SC s/m) Rx link

More Information