Dwarvin DVIRRXK102 HO Scale Railroad Crossing Kit Lamplighter DFL without Power Supply Hobby Knife Blade STANDARD DIFF OIL (VISCOSITY): F:10k

STANDARD DIFF OIL (VISCOSITY): F:10k

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Dwarvin DVIRRXK102 HO Scale Railroad Crossing Kit Lamplighter DFL without Power Supply Hobby Knife Blade STANDARD DIFF OIL (VISCOSITY): F:10kDwarvin DVIRRXK102 HO Scale Railroad Crossing Kit Lamplighter DFL without Power Supply This product system provides all that you need to integrate 2 Railroad Crossings together with 2 side on Detectors and 1 crossing bell all controlled by the Lamplighter DFL unit. The Detectors are of the pulsed infrared kind so they are insensitive to the ambient lighting. They stay on as long as they "see" an object. The DFL unit in turn turns off 5 seconds after