Circuitron 800-5203 DT-3 Single-Direction Grade Crossing Detection Unit Wheel Cleaning they cannot directly control large

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Circuitron 800-5203 DT-3 Single-Direction Grade Crossing Detection Unit Wheel Cleaning they cannot directly control largeCircuitron 800 5203 DT 3 Single Direction Grade Crossing Detection Unit The Circuitron DT 3 Single Direction Grade Crossing Detection Circuit utilizes our proven Opto Electronic Detection and will provide accurate grade crossing action for a single locomotive or a 100 car train. There are absolutely no modifications to rolling stock necessary. The DT 3 is completely independent of the track power and is compatible with AC or DC track power as well as