Product features: Intelligent track signal light red light lasts for 15 seconds automatically switches to green light lasts for 15 seconds and repeats repeatedly ，Equipped with an intelligent timed battery box, two lighting modes: constant light mode, timed mode lights up for 6 hours and turns off for 18 hours Universal design: compatible with LEGO and mainstream building block brands For example, train station sets, railway tracks, etc., low-power LEDs emit soft lighting, which can better showcase your building block models and show different scenery in the dark High quality: handmade, master level craftsmanship, every step is verified multiple times, ensuring the best products to customers Timer Battery Box: Intelligent timer battery box, two lighting modes, constant light mode, timer mode lights up for 6 hours and goes out for 18 hours. Regarding us: If you have any questions, please feel free to contact us. We wish you a pleasant shopping experience and a wonderful day. Bring the hustle and bustle of city life to your building sets with this realistic Traffic Light and Street Light set! Crafted with meticulous attention to detail, these miniature accessories add an authentic touch to your urban landscapes. The ultra-thin cables allow for seamless integration, blending seamlessly into your creations. Experience the thrill of a bustling metropolis as the traffic light automatically cycles through its vibrant red, yellow, and green signals, mimicking real-world traffic patterns. Designed for compatibility with popular building brick systems, this set is a must-have for urban planners and city enthusiasts alike. Whether you're constructing a sprawling cityscape or a quaint downtown scene, these versatile pieces elevate your builds to new heights of realism. Immerse yourself in the excitement of city life and watch your creations come alive with this essential Street Light and Traffic Signal set!