The Atlas Universal Signal Control Board is the heart of the All-Scales Signal System circuitry. This plug-and-play system supports both common-anode or common-cathode signals giving you the capability of modeling a variety of different prototypical scenarios.

• Stand Alone Operation - in this case a single signal runs independently of other signals, and displays appropriate aspects, such as red - yellow - green, in a timed manner.
• Integrated ABS Block Signaling - Connecting a number of Signal Control Boards together in a daisy chain fashion enables you to represent a prototypical block signal system, where the occupancy of the blocks ahead and behind your train determines the aspects displayed by the signals. The number of blocks is controlled by a simple jumper setting on each signal control board.
• Approach-Only Signaling - To better support prototypes whose signals do not illuminate until a train is nearby, the Signal Control Board has a setting to enable this behavior.