Z21 is a complete plug and play system and consists of: - the coordinating operation control - the Z21 mobile application for the operation of all set components (available as a free download) - the continuously expanding number of apps for driver cabs (available as a download) Z21 is designed for - Android and Apple systems (Tablet-PC, Smartphone) - digital DC- and AC locomotives Contained in the system: WLAN router, high performance switching power supply - The Z21 must be used with the supplied transformer (Roco 10851) Do not connect a different power supply. The system contains a 3.1amp booster and can be used with additional Roco 10765 boosters using the Booster Bus connection. Track voltage can be adjusted in the range 11-23 volts. Supports Programming on Main as well as a separate programming track

In the box:

1. Z21 Digital system

1. Power supply: 110V with US Plug.

1. Wireless router.