10800 - T - Circuitron DT-1 Grade Crossing Detector - 800-5201 - Used in Case
10800 - T - Circuitron DT-1 Grade Crossing Detector - 800-5201 - Used in Case - All gauges / scales with DC Track Power - Bi-Directional - 10-18 Volt DC input - Includes Specification and Instruction Document