Building a model railroad or need a flashing light circuit? This DC dual flasher is a pre-built module that controls two lights in an alternating pattern, with variable speed adjustment. It's brand new, ready to use, and measures about 45.8mm x 30.5mm x 12.7mm. Made in the USA with electronic hardware, suitable for ages 12+. Perfect for railroad crossing signals, emergency vehicle models, or any project where you want realistic flashing lights. Just hook up your DC power source and LEDs – the speed control lets you set the flash rate to match your scene. A compact, reliable solution for hobbyists, makers, and modelers. No soldering required if you use connectors. Add professional-looking lighting effects to your layouts or dioramas easily!