DCC-UAA Universal DCC Accessory Control with Alpha Encoder UnitUniversal 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