Circuitron 800-5520 SD-2 3-Position Semaphore Driver

CIR-800-5520

$24.95 $19.99
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Circuitron 800-5520 SD-2 3-Position Semaphore Driver
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Description

Use with the Tortoise Switch Machine and an upper or lower quadrant semaphore-style signal. Includes all 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.

All scales
Requires 10-18V DC power

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