The Digitrax Turnout Signaling Kit includes a dual-head A signal, a single-head B signal and a single-head C signal, three SMP1 mounting boards, six spacers and six screws. Makes your signals plug-and-play with small 10-pin connectors. The Turnout Signaling Kit is designed for easy plant setup with A, B, and C mast configurations. This product is intended for use with the Digitrax SE8C Plug′N Play Signal Decoder 245-SE8C Current setting resistors are built in to the board. Easy plant setup with A, B and C mast configurations. Pads are provided to make it easy to attach any signal to the mast base.