DIGICODE

Signaling apparatus and instruments, namely, railway signals used in railway and metro tracks to detect in a reliable way the presence of a train on a track circuit; monitoring apparatus and instruments used for detecting and displaying anomalous conditions in rails, namely, train presence detectors and broken railway line detectors; apparatus-for transmitting and reproducing sound or images, namely, audio, digital, radio transmitters which work at audio frequency and electrical joints used for transmission of continuous data messages between a stationary location and a train, and vice versa, used in the railway field