Circuitron 800-5520 SD-2 3-Position Semaphore Driver Plaster Cloth including a factory

including a factory

141 Whisker® Long Underset - Metal - One Pair

Woodland Scenics BR5025 HO Scale Built Up Structure - Fill'er Up and Fix'er

Will directly drive 2-color lamp r LED-type block signals

Circuitron 800-5520 SD-2 3-Position Semaphore Driver Plaster Cloth including a factoryCircuitron 800 5520 SD 2 3 Position Semaphore Driver Circuitron Electronics for Model Railroads 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.