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OUR ProductS

Signal Concept

Signal Concept has become a specialized developer and manufacturer of plant components and measuring devices in railway signalling and safety systems.


In-house product development and severe testing in real environments assure that every item of plant and equipment is optimally adjusted to the rough service conditions of the railways.

Burn-in during the production phase avoid early failures and guarantee a high quality. Every year new products are added to the existing range released for use by the railway companies.

Our products

Products of Signal Concept are distinguished by an individual adaptation to the respective signalling units, i.e. by:

  • A simple, menu controlled operation;
  • Optimized technical data;
  • Individual connection adapter;
  • A robust construction for external use;
  • Fully-automated test processes.


Tester for Insulated Rail Joints SICO 2046

Safe and contactless testing of insulated rail joints with direct resistance indication.
No more mistaken removal of faultless joints!


Cliplans SICO 4004

Electronically monitored mobile track shunt for track circuit occupation.

  • For safe blocking of track sections to protect work teams;
  • For track sections that are monitored by track circuits;
  • The CLIPLANS simulates the presence of a train by short circuit.



Insulation Fault Locator SICO 3017 ISKO

Quick help for fault location and reliable detection of defects.

The perfect device to locate all required connections, e. g.

  • when installing track circuits or trap circuits
  • when locating faults.

It locates inch by inch defective insulations and faulty contacts in tracks. It is even possible to detect faults on hidden parts of plants, e. g.;

  • Track rods under the pavement;
  • Track rods and shunting bonds under pavement, asphalt or concrete;
  • Loop detection equipment (track loops).

Faults are detected by signal tracking. The operating frequencies of track circuits, trap circuits, automatic train control, and loop detection equipment (track loops) are used as test signal. In case there is no operating frequency as test signal trackable, a small transportable Generator, which is included in delivery, supports your work. With the Sensor the test signal is tracked and made audible by a loudspeaker.

The SICO 3017 ISKO finds independently the strongest test signal and adapts automatically on the level ratio.

Main focus

Signal Concept solutions:

  • Supply of system-dependent measuring devices and service technology for clear track signalling systems and other train control systems (international);
  • Repairing, adjusting and calibration services for measuring devices made by Signal Concept;
  • Product development – for customer’s order too;
  • Measuring instruments and service technology for commissioning, inspection and fault finding on clear track signalling systems (axle counter, low and audio frequency track circuits and transmission circuits with transmission of individual frequencies;
  • Earth-leakage measuring instruments;
  • Individual accessory and chargers for all mentioned measuring and testing devices;
  • Safety units, which protect persons in tracks monitored by track circuits;
  • Electronic components for automatic train control units.

Learn more of the entire Signal Concept range here