ASP2-NS Automatic Signal Control

About the Product

The BLOCKsignalling ASP2-NS provides automatic control for multi-aspect light signals on model railway layouts, delivering realistic operation while greatly simplifying wiring and installation.

BLOCKsignalling is a professional UK-based manufacturer of model railway electronic accessories. Our modules are designed with realism, ruggedness, and long-term reliability as key priorities, ensuring dependable performance for years of operation.

Working signals add life and realism to any layout, but wiring signals - especially those with multiple aspects - can quickly become complex. This BLOCKsignalling controller allows signals to be connected to almost any power source and significantly simplifies the wiring between the module and the signal head.

Signals normally display green. When a train passes the detector, the signal immediately switches to red. Once the train has fully cleared the detector, the signal returns to green, passing through yellow and double-yellow stages when using multi-aspect signals.

The module features realistic fading between aspects to simulate the behavior of traditional filament lamps. The fade rate can be adjusted to suit your layout or disabled entirely if a sharper LED-style transition is preferred.

Key Features

• Automatic control of light aspect signals
  
• Signals normally show green and switch to red when a train is detected
  
• Returns to green once the train has fully cleared the detector
  
• Intermediate yellow and double-yellow aspects supported
  
• Realistic fading between aspects to simulate filament lamps
  
• Adjustable fade rates or fade can be disabled
  
• Simplifies wiring for multi-aspect signals
  
• Built-in resistors – no external resistors required
  
• Designed for reliable long-term operation

Compatibility Information

• Suitable for common-anode (common positive) LED signals
  
• Typically compatible with European, Asian, and American signal manufacturers
  
• Compatible with 2-, 3-, and 4-aspect signals
  
• Not suitable for filament lamps
  
• For common-cathode signals (Eckon, Train Tech, Berko, Traintronics, Absolute Aspects), use ASP1-NS

Power Requirements

• Can be powered from 8V to 25V DC
  
• Can be powered from 8V to 16V AC
  
• Can be powered directly from the DCC power bus or track
  
• Built-in resistors eliminate the need for external current limiting

Documentation & Support

For full installation instructions, wiring diagrams, programming options, and troubleshooting guidance, please download the latest instruction manual:

User Instruction Manual