DCC Concepts Alpha DCC System Power Upgrade Bundle dcctrainautomation DCD PWRAUX Alpha DCC System Power Upgrade Bundle DCC UAA Universal DCC Accessory Control with Alpha Encoder Unit DCCconcepts Products Iron Planet Hobbies DCD PWRAUXAEC Alpha System Upgrade Bundle with Accessory Control. Universal DCC Accessory Control with Alpha Encoder Unit Up to 12 Accessories Control digital point motors and lighting with AEU. Create your own contrl panel with toggle switches, push buttons or levers, then simply connect AEU to the Alpha Interface with the included curly cable. Simply connect the Alpha Interface to your DCC Track Bus! Pack Contents 1x DCC ESP. RX ESP Receiver and Alpha Interface 1x DCD ACL RJ12 Alpha Curly Lead 1x DCD AEU Alpha Encoder Unit