![Circuitron BD-1 Optical Detector Model Railroad Electrical Accessory #5501](javascript:h17.showPopupImage("//web4.hobbylinc.com/gr/ctn/ctn5501.jpg","ItemMain"))
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Features
- Tiny Opto-Sensors detect train movement. Sensors mount between the rails and activate circuitry when shaded from a passing train. Independent of track power, rolling stock requires no modifications. Sensors fit between ties and may be ballasted over in most cases. Circuitry is extremely sensitive and will operate properly under very low levels of room light.
- Positive indication whenever a section of a layout is occupied by rolling stock. Contains all circuitry to power two-color block signals at each end of the protected block. Will give proper indications if a train leaves a block by backing out. No modifications to rolling stock needed. Completely bi-directional. No additional driver boards or relays are needed. 250 ma. output can power lamp or LED-type signals. Requires 6-20V DC input. Independent of track power. Compatible with radio or command control systems.
Specs
- Circuitron Product Number: 5501
- Walthers Product Number: 800-5501
- Walthers Catalog: 2015 HO, page 268
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