h 5 Locomotives & Rolling Stockh 5ulli 1 x V200 Diesel Locomotivelili 1 x 1st Class Coachlili 1 x Two Compartment Coachlili 1 x Dining Coachliulh 5 Set Contentsh 5ulli 12 x Curves R3lili 1 x Feeder Sectionlili 8 x Straight tracks G200lili 1 x z 21 digital controller with wireless routerlili 1 x Power supplyliulh 5 Controller Detailsh 5 Differences between Z21 Black Unit & z 21 White Unit ulli A universal track output provides programming options on the main & CV programming can take place provided only one digital unit remains on the track Subsequent Rail Com implementation will also allow a read functionlili Body of z 21 is the same as Z21 rear connections will differ for z 21 connections are LAN BBus for Booster Maintrack exit & the main electrical power supplyli li No Loco Net port on z 21li li No CANBus port on z 21li li No rear XBus ports on z 21 two front Xbus ports remainlili No Snifferbus port on z 21li li No main track or programming track output voltage adjustment on z 21lili Track output remains at 3 amps for z 21li liz 21 uses the same app this means control remains the same Things like adjustment of trackvoltage will show in the App but will not work with z 21 unitliul