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Summary: LISSY is an automation system which uses transmitters on the vehicle to send data to a receiver. This data can be used to control routes, signals, etc. LISSY uses LocoNet to transmit data to compatible command stations.

Locomotive Individual Steering System (LISSY)

Developed by Uhlenbrock, LISSY allows modellers who want simple automatic control functions such as block traffic detection and shuttle operations without using a computer.

Lok-Individuelles Steuerung SYstem - LISSY


  • Train detection
  • Shuttle train control
  • Locomotive-dependent shadow station control
  • Digital block control
  • Speed measurement
  • Start-up and braking delay on signals
  • Automatic control of special locomotive functions
  • Locomotive-specific switching of solenoids and routes
  • Locomotive speed control
  • Works without any interruption to the track's DCC signal


LISSY consists of an infrared transmitter that is mounted under the vehicle and a receiver module in the gauge, which reads address, train category, speed and direction. Communications from the transmitter are recognized by the receiver and transmitted to the LocoNet, without requiring a computer to implement various automatic control functions.

  • LISSY recognizes the locomotive and shows which train has entered the station.
  • LISSY controls the shuttle train traffic in the terminus of the single-track branch line.
  • LISSY manages your shadow station, automatically releasing trains as necessary
  • LISSY controls the blocks automatically, without a computer.
  • LISSY applies the brakes approaching a red signal using the decoder's Brake function.
  • LISSY measures the speed of passing locomotives.
  • Depending on the situation, LISSY activates sound functions of locomotives, such as the whistle at a tunnel or at a level crossing when approaching a whistle indication.
  • LISSY activates lights dark areas (shadow station, tunnel)
  • Sound activation possible with locomotives equipped with "IntelliSound".
  • LISSY can switch the headlight of a locomotive on or off
  • LISSY controls the speed of locomotives, e.g. in train station entrances or slow routes.
  • LISSY works without any electrical or mechanical alteration of the track. Easily be retrofitted to any model railroad.

The LISSY transmitter mounted under the vehicle. The address, along with other data, is transmitted using infrared light (invisible to the human eye, such as the remote control of a TV) radiated along the track. The sensors in the track receive this infrared light signal and report to the LISSY receiver which reacts according to its stored programming.

In the LISSY receiver various commands are available to control the speed, functions, in addition to signals or routes. The commands are executed or not depending on the locomotive's address. Furthermore, the LISSY receivers can trigger routes via track occupancy messages or control software on an external computer. When the LISSY receiver recognizes a locomotive address, it searches through all stored commands to determine further actions. If there is an action, the corresponding commands are sent via LocoNet to the command station.

A compatible command station uses the received LocoNet command to create the appropriate commands for the DCC system. The command station maintains total control of the layout.

The LISSY receiver can also be used in various types of complex automations. Automation is possible without regard for specific addresses. So every train stops at a terminal, and leaves in the opposite direction. Monitor and control of signals to match the automatic function is possible. Each train passes through the block if the signal is green, stops if the signal is red.

Technical Details


The transmitter (TX) is mounted on the underside of the vehicle.

  • Programmable with DCC Direct Mode (CV programming) bit and byte
  • Programmable in DCC register mode
  • Distance of the transmitter to the top edge of the rail: Max. 12 mm

The TX works like a flashlight, so it must illuminate the track in front of the vehicle for the LISSY system to work.

Receiver (RX)

  • Current consumption: approx. 25 mA on LocoNet
  • In switching mode, 10 commands each for speed, functions and solenoids
  • 7 automatic modes
  • Functions: depending on the direction or independent of direction of travel
  • Independent of digital formats
  • Data transmission via LocoNet

The LISSY receiver has two sensors. The sensors are one after the other (double sensor), direction-dependent commands can be issued. Holes are drilled to install the sensors. The LISSY receiver should be within 25 cm of the sensors.


The LISSY receiver communicates with the command station using the LocoNet T wiring. After installation the receiver can be programmed.


This information is incomplete. Some details about the system are unknown.

Condensed from the LISSY Handbook by Uhlenbrock, 2004.

Handbook, English

Further Reading

Unofficial LISSY Manual