800-5204 DT-4 Rolling Stock Detector Class-69 'Green Arrow' was the first

'Green Arrow' was the first of the class and named for publicity purposes surrounding the launch of the LNER's express freight services

This Dennis Light 4 is based on the pump escape registered BPM 213

The Short Crossing is double the angle of other track components in this range

‘Britomart’ was employed at the quarry in the Nantlle Vale

1832A were then fitted with different headstocks and buffers

800-5204 DT-4 Rolling Stock Detector Class-69 'Green Arrow' was the firstDT 4 Rolling Stock Detector Details: The Circuitron DT 4 Quad Optical Detection Circuit is a versatile train detection system designed to monitor rolling stock movement and location throughout a model railway layout. Incorporating four completely independent detection circuits on a single board, the DT 4 provides an efficient and flexible solution for hidden staging yards, concealed trackage, train positioning, automation and accessory control. Using