Details West HO Scale: GRS Style D 2-Headed Block Signal - 3-Over-3 Aspect Variants
Signals are based on some of the common types used from the 1940s to the present. Signals feature bright three color LEDs configured for common anode (positive) wiring. Resistors are required to connect these to your favorite electronic driver/detection circuits (circuits not included). Maximum 2.2 Volts / 5 Milliamps.