This O scale Dwarf Block Signal is part of a prototypical system that a provides the ability to have a fully integrated Block Detection system when used in conjunction with detectors.
It is designed to be used with either the DFL unit as a Block Signal, or with the Turnout Controllers for Turnouts.
To mount the unit, just drill a 1/8" hole in the layout, insert the fibers and then the tubing to the desired depth. The size of this hole will provide a snug fit for the Block Signal post, keeping it from swiveling around.
The integration of the Block Signal with the detectors is shown in the block diagram below.
See the Detector units that are available and compatible with the Lamplighter FL unit.