Velleman# MK131.
Miniature traffic light as used on four-way junctions. Realistic operation with adjustable delay. 12 LEDs. Great for model railroads, exhibitions, and toys. Low power consumption: 15mA. Power supply: 9V battery (not included). ON/OFF switch. 2 x 1.4 x 4.5"
Note: Kits cannot be returned or exchanged once assembly has begun.