The Circuitron BD-2HD is a current-sensing block occupancy detector for model railroad layouts. Its brief turn-off delay helps reduce missed detection from dirty wheels, while the outputs can drive common two-color block signals.
BD-2HD features
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Product type: Current-sensing block occupancy detector for model railroad layouts
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Board: 2-inch by 3-inch printed circuit board
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Compatibility: LED-type or incandescent 2-color block signals, Circuitron PCMT (Printed Circuit Mounting Track), and large-scale equipment
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Track power: Standard 6-amp track power capacity
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Detection: Approximately 1/2-second turn-off delay
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Output: Maximum current capacity of 250 mA, with signal-driving capacity increased to 500 mA per output
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Contents: One BD-2HD circuit board; a set quantity is not specified in the current product details
Installation notes
The board supports daisy-chain wiring for multiple blocks and is designed to snap into a section of Circuitron PCMT for installation in a model railroad layout.
Product details
This is an electronic layout accessory, not a model kit, and no scale is specified in the current product details.
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