800-5501 BD-1 Block Occupancy Detector Opto-Elect Large-Item Once assembled

Once assembled

The thick wooden lamp posts have ladders for easy access to maintain the lamp itself

Weathered Network Rail Yellow livery

Pilot figure

The British Railways Board's (BRB) 1955 modernisation plan called for a change to alternative forms of traction and manufacturers were asked to produce trial or initial designs for evaluation

800-5501 BD-1 Block Occupancy Detector Opto-Elect Large-Item Once assembledBD 1 Block Occupancy Detector Opto Elect Details: The CIRCUITRON BD 1 is an advanced integrated circuit block occupancy detector designed to provide reliable, positive indication of track occupancy in model railway layouts. Using proven opto electronic detection technology, it identifies the presence of any rolling stock within a protected block section without requiring modifications to locomotives or wagons. Two pairs of CIRCUITRON opto sensors are