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Occupancy Detection:

Digitrax: BD4N

Summary: A low-cost, high-sensitivity DCC block-occupancy detection for 4 blocks. Capable of handling up to 8 amps and BDL168 compatible.

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Digitrax BD4N.webp
General information
DCC Category
Occupancy Detection
Manufacturer Digitrax
MSRP 37.00 USD37.67 EUR <br />32.96 GBP <br />55.92 AUD <br />49.92 CAD <br />
Compare Prices Latest Prices
Manufacturer Part Number
Common Name
UPC Number 652667110167
Release information
Product URL Product Link
Manual URL Manual Link
Has computer interface None
Firmware Upgrade Possible No
Year Released 11/2020
Year EOL
Predecessor BD4
Misc Details
Height 27 mm2.7 cm <br />0.027 m <br />1.063 in <br />0.0886 ft <br />
Length 67 mm6.7 cm <br />0.067 m <br />2.638 in <br />0.22 ft <br />
Width 99 mm9.9 cm <br />0.099 m <br />3.898 in <br />0.325 ft <br />


A replacment to the BD4.


The BD4N is simple to install, plug in and begin using on your layout.


  • Support detection in 4 blocks.
  • Handles up to 8 amps of current.
  • On-board status leds for stand-alone occupancy and track power indication, expandable for optional LT5 or fascia mounted occupancy indicator leds.
  • Plug and Play connections to simplify setup. Can cascade Booster wires.
  • Isolated Occupancy output signal lines can drive most common signal system or control interfaces.
  • Compatible with DS64 and SE8 modules for signaling, control and reporting occupancy onto LocoNet.


  • No FAQs link to this page.

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