This set simulates an automatic traffic light sequence. The LEDs alternate from Red, Amber and Green just like the real things. The sequence is set up for random intervals between 9 and 30 seconds so that if you have others installed on the layout all the traffic lights do not change at the same time.
This unit can be powered by a 9 - 16v supply or by attaching it to your DCC Bus.
Extra LEDs are available for this kit.