RC10837 Digital Z21 Signal DecoderThe Z21 signal DECODER is a universally applicable DCC decoder for complex light signals. Operation is even easier with the Z21 app as the signal types are also stored in the app and can be read out automatically from the decoder. This can be conveniently done via Z21 pro LINK. Updateable Extensively configurable RailCom compatible Over 30 signal types are included, such as: Germany: H V signals, Ks signals, HI signals, block signals, Austria: Main