800-5250 DF-1 Grade Crossing Detector with Flasher

The Circuitron DF-1 is a single-direction grade crossing detector and alternating flasher for model railroaders building layouts in any scale. It detects a locomotive or train without modifications to rolling stock and operates independently of track power.

DF-1 Features

• Product: Grade crossing detection circuit with alternating flasher on one printed circuit board
• Scale: Compatible with any model railroad scale
• Compatibility: AC, DC, and command control systems (DCC)
• Detection: Single-direction operation for a single locomotive or a train of up to 100 cars
• Power: Requires a 10–18-volt AC or DC power source and remains independent of track power
• Board size: 3 × 3 inches
• Flasher capacity: Two 250 milliamp loads, approximately four grain-of-wheat lamps or 10 LEDs per side
• Set contents: One DF-1 circuit board

Layout Integration

The Accessory OUT terminal provides a ground output whenever a train is detected. It can be used with additional circuitry to control crossing bells, gates, or other layout accessories. Other Circuitron detection circuits, including the DT-1, DT-2, and DT-3, can connect to the flasher section when parallel-track detection is needed.

More Information

See the Circuitron Electronics product information and browse Train Layout Construction supplies for related layout projects.