Speed-signal duplicator with SIL 4 decoupling and SIL 2 safe transmission according to EN 50129, intended for retrofitting existing rolling stock with new odometry and ETCS systems. It enables non-invasive acquisition of the speed-sensor signal without modifying the wiring of the vehicle's original control system. 1000 V insulation protects both systems against mutual interference. SIL 4 certification at the decoupling level meets the most stringent safety requirements referenced in EN 50129.
