AUTOMATIC COLLISION AVOIDANCE ELECTRONIC TRACK SYSTEM!!! For use with all DC model trainsclick on Videos to see it in ACTION!!!RUN 2 TRAINS ON 1 TRACK!!!this is not a DCC System, this is a low cost, easy to use, simple to wire alternative to expensive and complicated DCC System. With only 3 wires to connect to your existing track this is simple low cost solution that can add hours of fun to your layout. 3 insulator pins are needed for your gauge track not included.This automated hands free system can also be used to automaticlly operate switches and semophores and track signals. Engines and trains do NOT need to be modified to use this system. Simple wire directions are included.This is aSolid State CurrentSensing Device that replaces other devices costing 3 or 4 times as much, it is completely self contained and more reliable then other systems on the market. It can be installed in minutes and is fuseprotected.It senses Engine in control section of trackThank You for Viewing. Please feel to ask any questions Shipping Is Always FAST & FREE. Returns Accepted Within 14 Days.By looking you Accept and Agree to these terms.PAYMENT MUST BE RECEIVED WITHIN 4 DAYS.PAYMENT USA PayPal Account.Ship to USA PayPal Address only.Shipping Monday to Friday. Closed weekends and holidays.Shipping ChargesShipping Charges as stated in each listing. Shipping PolicyAll shipments are made via United States Postal Service, Actual transit times vary. Powered by eCRATER . List your items fast and easy and manage your active items.