Ansaldo STS’ signal products provide industrial performance for railroad and transit systems everywhere in the world. From complete wayside signal assemblies to signal components that retrofit to your existing system, our products offer longer service life and unsurpassed standards in reliability.

LED
The LED Colorlight Signal’s advanced design maximizes signal longevity and lowers maintenance costs. Other LEDs imitate the behavior of incandescent bulbs requiring that essential electronics be integrated into the signal. The LED Colorlight Signal moves the electronics back to the house for true LED “light out” detection. Its unique electronics use a constant current source to maintain LED intensity and superior reflector design mitigates phantom signals. Among the many features of the Ansaldo STS LED Colorlight Signal, Led technology extends wayside signal life well beyond that of the incandescent design and requires less power to operate. Other LED signal modules are designed to perform like incandescent signals to enable operation from conventional lamp driver circuits. In contrast, our signal operates from an external constant current source and allows for much more accurate monitoring of LED unit operation. Used in concert with MicroLok® II LED12 lamp driver board or MicroLok® II Object Controller, high precision “lamp”- out detection as well as routine hot/cold “filament” checking is provided. The LED signal can also be applied in failover-to-red configuration to ensure display of a red aspect in the vent of a signaling unit shut down.


Lamp
Ansaldo STS also has a complete range of incandescent lamps for railroad and traffic signal lights. Ansaldo STS stocks a complete line of incandescent lamps, including quartz-iodine, for railroad and transit signal lights. These lamps are built to exacting specifications and help yield maximum performance from signal unit optical systems. A wide variety of filament, base and bulb configurations are available to satisfy most signal requirements.