Circuitron 800-5521 BD-1HD Optical Detector Ballast - Medium metal to plastic and plastic

metal to plastic and plastic to plastic

make that one worker

The AEI Tag Reader / Scanners are sold in pairs

Woodland Scenics TR3597 Classics Tree

Circuitron 800-5521 BD-1HD Optical Detector Ballast - Medium metal to plastic and plasticCircuitron 800 5521 BD 1HD Optical Detector The Circuitron BD 1 is an advanced, integrated circuit design Block Occupancy Detector utilizing our proven Opto Electronic design which provides positive indication when ever a block section of a layout is occupied by any piece of rolling stock. The BD 1HD is identical to the BD 1 but includes heavy duty output transistors to power lamps in large scale signals. Each output on the BD 1HD can control 500 ma.