Brickstuff Deluxe 4-Way LED Traffic Light Intersection Kit - Unmounted Pico LEDs (For Your Own Design) - KIT17D-LEDS
If you need to control a 4-way intersection in your LEGO City, or if you want to add automatic lights to your custom-designed traffic lights, these Deluxe 4-way Intersection Kits are for you. We offer two varieties: one with brick-built traffic lights (LEDs pre-mounted) and one with unmounted Pico LEDs that you can install into a traffic light of your own design.
Both variants of these kits include a Master Controller, four Daughterboard Controllers (one for each traffic light), 12 Pico LEDs (4 each of red, yellow, and green), and connecting cables. Just add a power supply (sold separately).
The difference between the variants is that the Brick-Built version includes pre-built traffic lights made with genuine LEGO elements in new condition. These have Pico LEDs pre-installed, so the design cannot be changed. The Unmounted Pico LEDs version has 12 Pico LEDs with 12" cables that you can use to install in traffic lights of your own design.
The Master Controller keeps all of the traffic lights in sync (one wire connects the Master Controller to each of the four Daughterboard Controllers)-- this creates the most realistic 4-way intersection light kit you'll find anywhere. You can adjust the brightness of each LED, the timing of the red/green cycling, and U.S./European mode using the dial and buttons on the Master Controller. Settings are saved even when power is turned off.
You won't find a more realistic set of traffic lights anywhere in the LEGO universe