Check the listing for details. Little Lights Traffic Light / Traffic Signal Controller, LIGHT NOT INCLUDED. Condition: New. Listed at 39.95 USD. Our Little Lights Controller is the ultimate scale model traffic signal control module! This controller is specially designed to provide the most authentic traffic light operation at any scale model intersection. Regardless of the light style or cycle speed, this controller provides the best animation to suit almost all needs. With a networked operation feature, multiple units can be linked together to operate many model intersections in unison. LIGHT NOT INCLUDED!!! Key Features Operation modes for 5 different lighting styles: red/yellow/green, red/green, flashing yellow, flashing red, and flashing red & yellow Adjustable timing adjusts the cycle speed on standard traffic lights and the flash rate on flashing traffic lights Networked operation allows one unit to set the cycle speed, while each subsequent unit follows the leader. Each follower has adjustable lag to tune operation Can be powered via USB or 12 volts Provides 5 volt DC output for simple lighting effects Configured to operate common cathode (ground) traffic signals Set Up Full set up instructions can be found in the Users Guide. Set up for a simple installation is done in minutes! Simply use the provided screwdriver to attach the wires from each traffic signal to the controller using the screw terminals. Then connect power either via USB or from a 12 volt source, and you're good to go! Use the screwdriver to adjust the variable cycle speed to dial in a desired operation speed.