6-14151 - Mainline Dwarf Signal

• FEATURES:
• Die-cast metal construction
• Lights change from green to red when trains move through its block
• Lights automatically reset to green when block clears
• 153C Contactor included

• Gauge: Traditional O Gauge 

 Brand: Lionel

• Dimensions: 3/4” x 3/4” x 1 3/4”