Do you want to know more about the Z21-digital system? Here you can find our current product documents for free of charge download.

All connections of the black Z21-digital system

Z21_Connections (pdf - 19.30 MB)

All connections of the white Z21-digital system

z21_Connections (pdf - 8.21 MB)

Z21 apps.

Z-21 mobile HD, iPad
Z-21 mobile, iPhone
Z-21 mobile, Android
Z21 Updater, Android


Z21 Usermanual (pdf - 3.86 MB) (Deutsch, English, Francais)
Z21 Usermanual (Italian, Spanish, Portuguese) (pdf - 6.13 MB) (Italian, Spanish, Portuguese)
Z21 Usermanual CN 中文用户指南 (pdf - 8.41 MB) (Mandarin)
Z21 Usermanual JP デジタルシステム (pdf - 3.67 MB)
Z21 Usermanual CZ (pdf - 3.40 MB)

Z21 and z21 EN (pdf - 3.57 MB)

Z21 Führerstand BR 218 (pdf - 827.40 kB)
Z21 Führerstand der BR 52 (pdf - 4.38 MB)
Z21 Führerstand der BR 103 (pdf - 1.52 MB)
Z21 Führerstand der 1116 Taurus (pdf - 1.72 MB)
Z21 Führerstand der Rh 109 (pdf - 1.77 MB)
Z21 Digitalsystem (pdf - 1.26 MB)
Z21 Digital System en (pdf - 1.20 MB)

Z21_Booster_light_10805 (pdf - 2.52 MB)


Manual to use the Gleisbesetztmelder GBM16XN from Blücher-Elektronik with your Z21
Z21 GBM16XN (pdf - 2.68 MB) (German)

Technical downloads

With the Z21 service application “Z21 Maintenance” version 1.11 you can configure and maintain your Z21 via Ethernet or WiFi. Additionally, with this application you can update your Z21 to version V1.29 as well as your smartRail to version V1.15.

Z21_Maintenance_V1.11.2 (zip - 2.34 MB)
Z21_Maintenance_V1.11.1 (zip - 2.33 MB)
Z21_LAN_Protokoll V1.05 (pdf - 770.41 kB)
Z21 Maintenance V1.05 (exe - 4.61 MB)
Z21 Maintenance V1.06 (zip - 2.09 MB)
Z21_Maintenance_V1.08 (zip - 2.67 MB)
Z21 - Maintenance V1.10 (zip - 2.65 MB)

Z21 Router Konfiguration (pdf - 935,00 kB)

Z21_LAN_Protokoll_V1.07 (pdf - 751.80 kB)

If you want to know more beyond that, please simply contact our specialist trade partners in your vicinity.
Dealer list


With the Z21 update applikation “Z21 WLANmaus Update Tool“ version 1.01 you can update your Z21 WLAN-multiMAUS via WiFi to WLANmaus version 1.05, radio module version 1.04, as well as languages version 1.0F.

WLAN MULTIMAUS Update V1.01 (zip - 1.39 MB)


With this application you are able to stream the picture of your camera on your PC or laptop.

Videolok_Live (zip - 1.28 MB)



Roco NEXT Generation App Download:

ITunes: Link

Google Play: Link