Digitrax SMBK Plug'N Play Signal Mast Base Kit -- pkg(3)

Digitrax RD2 Occupancy Detector Accessories -- RD2 - Remote Sensing Diode - Use w/BDL168 (Sold Separately)

SNABC Turnout Signaling Kit -- Includes 1 Dual-Head and 2 Single-Head Signals, 3 SMP1 Mounting Brackets

Digitrax SH2AB Mainline Signaling Kit -- Includes 2 Single-Head A Signals, 2 Single-Head B Signals, 4 SMP1 Mounts