Dual Traffic Light Controller - LED Sequencer / Model Railroad Compatible HO,N,Z Five programmable sequences including 4 way intersection, British style, and signal with RR xing or crosswalk. Separate digital control for "YELLOW" allowing for more realistic operation Independent outputs channels for operating LEDs or Incadescent lamps at the input voltage Dual removable shunts for switching to LED output mode (Common anode). Compatible with most model railroad traffic lights including Model Power, Bachmann, & Walthers.