800-5502 BD-2 Block Occupancy Detector Current Sensing O-16.5-Scale completed layout needs no plywood

completed layout needs no plywood base or additional structural support

pull out the PCB

This kit stands out for its high level of detail

The Walthers Cornerstone HO Scale Kalmar Intermodal Container Crane is patterned after machines used in railroad intermodal yards since the 1970s

entering or leaving an office building

800-5502 BD-2 Block Occupancy Detector Current Sensing O-16.5-Scale completed layout needs no plywoodBD 2 Block Occupancy Detector Current Sensing Details: The CIRCUITRON BD 2 is a highly sensitive integrated circuit block occupancy detector designed for reliable operation across virtually all model railway scales and track power systems, including most forms of command control. It detects the presence of locomotives and lighted rolling stock by monitoring current draw through the rails, providing accurate and responsive block occupancy indication.