DS10 Multi 4 Aspect signal
Modern railways have multi aspect signals where a single lens (DS9) can display red,yellow or green and a 4 aspect dual lens version (DS10) 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.
DS10 - Multi 4 aspect signal
DS10L - as above but fitted with Left feather indicator
DS10R - as above but fitted with Right feather indicator
DS10T - as above but fitted with Theatre indicator