The island Track Circuit TC-900 developed by ICF has been developed according to CENELEC SIL 4, it has a double shunt sensor configuration 2oo2 and is compatible with all existing track circuits. These features make it one of the most advanced circuits on the market and allow its application in almost all facilities.

Other qualities that certify a product as robust and reliable may be its high selectivity, audio-frequency, continuous self-adjustment, temperature range of -40°C to +85°C and reduced consumption by over 80% compared with previous technology.