IR sensors detect and count the actual number of axles on a passing train and determines when track is clear 5 O Gauge FasTrack Section and Building,
Central Hobbies O Scale, S Scale, TT Scale and Z Scale products page.
Lionel Electric O Gauge Model Train Accessories, Defect Detector with Sounds, 1929100 : Arts, Crafts & Sewing
Lionel 1929100 Defect Detector
Lionel 1929100 Defect Detector with sounds
Lionel Trains O 665022 O-27 Gauge Track System - 3-Rail -- Manual Turn
Lionel Train Tracks in Cars, RC, Drones & Trains
Lionel Electric O Gauge Model Train Accessories, Defect Detector
Power & Control - Other Control Accessories - Page 1 - Crazy Model
Atlas O's bumper allows for quick and easy installation. Snap-fit into Atlas O 21st Century Track with prototypical precision. Includes 2 pcs/box.
Atlas O - O Bumper w/o Track (2)
Lionel Train Tracks in Cars, RC, Drones & Trains
Lionel 1929100 - Defect Detector w/ Sounds – MrMuffin'sTrains