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Boulder Creek Engineering NightScope™ Delayed Response Infrared Detector NS-352


The Instant Response Detector reacts to train arrivals and departures by immediately changing its outputs. This is the Detector for fast acting electronics that expect and can handle brief changes in detection, such as between railcars.

NightScope™ Infrared Detectors are perfect for dramatic night operations. A southbound extra glides past the Louisville scale house on the Colorado & Southern Railway.

The NightScope™ Infrared Detector reliably senses trains in all lighting conditions. Just 3 inches long and less than 3/8 inches in diameter, the Detector mounts below your track with two small holes in the ballast between the rails. When a train is present, the Detector activates its two opposite-polarity outputs, “Detect High” and “Detect Low”. These outputs are designed to drive a wide variety of popular model railroad electronics.


Stock # BCE / NS-352

Reliable & easy infrared train detection for model railroads, for all scales

  • Independent of layout lighting: bright, dim, or no light
  • No false triggering from other light sources (including infrared)
  • No changes to track wiring, locomotives, rolling stock – no gaps to cut, no resistor wheel sets, no reflectors!
  • Perfect for night operations

Unlimited model railroad applications

  • Two outputs of opposite polarity deliver 200 mA each when activated — enough to directly drive relays, switch motors, or dozens of LEDs
  • Directly drives inputs to model railroad electronics from Digitrax, C/MRI, Logic Rail Technologies, ITT Sound Modules, and others
  • Delayed Response Detector holds outputs 2 seconds after train departs
  • Great for computer control applications

Simple installation

  • Self-aligning component installs in the roadbed between the rails
  • Powered directly from other electronics or a filtered 5-16 VDC supply
  • 18 inch wires for extra reach
  • Onboard LED lights when train is detected – easy to verify installation
  • Nothing to adjust
  • APPLICATION GUIDE ( Click Windows back button or back arrow tab / Mac Arrow Tab or Delete Button when finished ):  Application Guide
How to Use
Full Instructions arrives with product
Limited Warranty Boulder Creek Engineering, LLC warrants its products to be free of defects in materials and workmanship for a period of one (1) year from the purchase date. Defective product received by Boulder Creek Engineering during the warranty period will be repaired or replaced at our option. You must pay shipping to and from Boulder Creek Engineering. This warranty does not cover damage resulting from negligent installation, improper operation, or unauthorized repair or modification. Removal of the product heat shrink voids this warranty. Boulder Creek Engineering makes no other warranty of any kind, expressed or implied. In no event shall Boulder Creek Engineering be liable for incidental or consequential damages. For warranty service, please contact Boulder Creek Engineering for a Return Merchandise Authorization (RMA) number. Product must be shipped to Boulder Creek Engineering with dated proof of purchase (your receipt).
Shipping Details
Standard Mail Post with Tracking.