Block Signal Controller for Fiber and LED Block Signals sold by Model Train Technology .
N Scale and HO 7 Light PRR Signals use FIBER.
O Scale uses LEDs.
If you want to light your own N or HO Scale 7 Light signal that has LEDs, choose the LED Version
USE THIS PRODUCT TO LIGHT THE PRR AND LIRR BLOCK SIGNALS
Remember to chose a Mounting Bracket.