Lionel 2231540 O Scale LEGACY 0-6-0 Steam Locomotive Frisco SLSF 3801 BTO Mini T 2.0 The AR-1 uses tiny Opto-Sensors

The AR-1 uses tiny Opto-Sensors mounted between the rails where they are shaded from ambient room light by a piece of rolling stock

The next evolution of model train couplers starts and ends with the Kadee® Whisker® series of couplers

Scale Detail

NWSL 28006 HO Scale Upgrade Steel Bevel Gear pkg(6)

Lionel 2231540 O Scale LEGACY 0-6-0 Steam Locomotive Frisco SLSF 3801 BTO Mini T 2.0 The AR-1 uses tiny Opto-SensorsLionel 2231540 O Scale LEGACY 0 6 0 Steam Locomotive Frisco SLSF 3801 BTO There's nothing like the sight of a fast freight highballing down the main but toiling away in yards and mills, switch engines like the 0 6 0 do the hard work that makes all of those other trains possible. Yard switching can be a great addition to any model railroad as well you don't need a huge empire to spend hours making up new cuts of cars, spotting loads and grabbing the