Bulletproof switches are the foundation of any track system. They allow you to grow and expand your layout. Lionel FasTrack switches are second to none when it comes to durability and innovative, industry-leading features. All Lionel remote switch controllers conveniently lock together for easy access. Interchangeable number inserts allow you to instantly find the switch you want to control. Red and green LEDs indicate switch position on the remote switches, not need to change light bulbs or worry about heat build up. Build the layout of your dreams today.