z-stuff dz-1020n crossing signal n scale

Z-Stuff -- DZ-1020-N Crossing Signal -- All brass signal with realistic scale proportions. Optical train detection ( no cutting of rails required). Realistic, long-life, red LED signals flash at prototypical rate. Stops automatically 4 sec. after train passes. Input for additional early detection with down track sensor(s). NEW "S" version will operate the DZ-1020B Crossing Bell Sound Module (sold separately)