Micro-Mark IRDOT-PEW (InfraRed Detector Of Trains, Points/Switching, Extended Wire-Leads)

Mt. Penelope Railway Seal of Approval
All Scales

(InfraRed Detector Of Trains, Points/Switching, Extended Wire-Leads)

Automatically Aligns Turnouts!

Our Infra Red Detector Of Trains (IRDOT) emits a beam of invisible infrared light through a small hole drilled between the ties of your model railroad track.

When a locomotive or railcar passes overhead, it reflects this beam through the same hole to IRDOT's detector.

This, in turn, triggers a circuit which turns on a light or energizes a relay.

Use it to indicate when a train has reached the end of a hidden siding, is located in a tunnel, has cleared hidden staging yard switches and more.

IRDOT's circuitry is independent of track power and detects both powered and unpowered rolling stock without modification.

IRDOT-PEW has separate emitter and detector attached to 18 inch long leads for mounting in tight spaces or for use as a beam splitter (trains break the beam and trip the circuit).

Has additional relay to activate solenoid-type switch machines.

Relay contacts provide power to switch machine for 1 second.


  • Operation not affected by room lighting
  • Circuit board is 1-1/4 inches wide x 3-1/2 inches long
  • Requires external 12-16v AC or DC power supply (use the accessory terminals of your power pack or separate transformer
  • Includes red LED for train indication
  • Instructions for advanced circuits, signals
  • 10 amp capacity

Add to My Railroad   Copy this IRDOT-PEW to your MY ACCESSORIES roster.
Sign In to use this feature.   

Email Link Email this page to a friend
Reviews will go here
(InfraRed Detector Of Trains, Points/Switching, Extended Wire-Leads)

Last Chance – 1 Left In Stock

Our Price: $40.00
MSRP: $55.40
You Save 28%

Member Price (Order < $100): $38.80
Sign In to Save 30%

Best Price! Member Price (Order > $100): $36.00
Sign Into Save 35%

Sign In to use this feature.

This item is ready to ship.

Member Prices shown realized by Discount applied in Shopping Cart. Savings shown are calculated versus MSRP. You must be signed in to receive Discount.

See more products from Micro-Mark

HO Scale, HO Gauge, N Scale, N Gauge