FACING JUNCTIONS

For facing junctions, you can use the MAS Sequencer RI and IRDASC-4RI. The ‘RI’ stands for Route Indicator (feather) which these boards control. For trailing junctions, the terminal labelled ‘OI’ on the boards changes the signal to red. This terminal can be connected to contacts operated by the point so that if the point is set to derail the train, the signal will be set to red.