TTDS9T DCC Signal (Theatre Indicator) Multi 3 AspectFully assembled signal with head, aluminium mast and electronics fitted inside base. Modern railways have multi aspect signals where a single lens (SS9) can display red,yellow or green and a 4 aspect dual lens version (SS10) which can also display double yellows. Train Tech offers both types with the DCC decoder pre fitted and like all other DCC signals is easy to control using a DCC address of your choice. FEATURES Unique One Touch DCC setting up NO