Circuitron 800-5521 BD-1HD Optical Detector N RB These new mats are easy

These new mats are easy to cut to fit your scenes and feature a realistically colored base under applied grass

A trash can and fire hydrant completes the scene

Decals purchased separately

The outside radius of the turnout is listed at 30”

Circuitron 800-5521 BD-1HD Optical Detector N RB These new mats are easyCircuitron 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.