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Circuitron SD-2 3-Position Semaphore Driver

Circuitron SD-2 3-Position Semaphore Driver

Estimated Shipping: 2-3 Business Days

800-5520
$19.95 $24.95
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Use with the Tortoise Switch Machine and an upper or lower quadrant semaphore-style signal. Includes al the logic circuitry to drive the signal to all three positions. Works with BD-1 or BD-2 Block Occupancy Detectors. A minimum of two blocks must have detectors installed for the SD02 to indicate all three positions. Requires 10-18V DC power.

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