S / O Scale 2-Rail Turnout Signals Kit - Snap Bipolar 2 Wire - Signals Variants:O Scale 2-Rail Single Silver Dwarf Signal (DVFLBS601S) There are two different size

There are two different size "electrical boxes" that come with each package

most notably the

This detector makes detection of locomotives or rolling stock easy and reliable

You can also cascade each controller so that you only need to power one and all are powered

S / O Scale 2-Rail Turnout Signals Kit - Snap Bipolar 2 Wire - Signals Variants:O Scale 2-Rail Single Silver Dwarf Signal (DVFLBS601S) There are two different sizeThis system is designed to integrate with your snap bipolar 2 wire switch machines, most notably the Kato Rokuhan Rapido Trains, and any others using 2 wire snap machines. A unique feature designed into this system is that it remembers the direction of the turnout from the last time it was used, even when power has been interrupted. Another unique feature is that it can be used with either AC or DC power, directly from the turnout power! You can also