Digital Z21 Booster 3a.
Features
    Power 3 A (track output)
    Adjustable track voltage via Z21 (12–24 V)
    RailCom global detector (allows POM reading in the booster section)
    Configurable terminal loop feature with short-circuit detector
    Brake generator feature, configurable
    Connections via CAN bus, B bus, CDE bus
    Configuration and update simply by app or PC via CAN
Optional Extras
    Matching power supply: 10851
Note: This unit requires a power supply to operate, Sold Separately.