MTH 50-1004 DCS AIU Accessory Interface Unit Protosounds 2 switches accessoriesU Rev L w/manual BOXED LNIB Track Interface Unit Protosounds

Here is what you need to control those accessories and switches with your MTH DCS set up. Whether you want to use it with your MTH O gauge, G, HO, S or standard gauge, this is what you need to easily get the most out of your digital trains.The Track Interface Unit or TIU has an assortment of input features allowing the operator to link up to two AC or DC transformers, add additional AC transformers, program new software features, serial interface (RS-232), AUX power, Proto-Cast audio, AIU input, and Proto-Dispatch.FEATURES Control up to 10 Switches Control up to 10 Accessories Easy to Wire Operates With AC or DC Powered Switches & Accessories Daisy Chain up to Five AIUs per every TIU or WTIU The AIU Accessory Interface Unit is essential a box containing a bunch of relays that are triggered from either a DCS Remote Handheld or a iOS or Android smart device loaded with the DCS App. The AIU is connected to either the DCS TIU Track Interface Unit or WTIU WiFi Track Inter