Product Features and Details
MFX
Two uncoupled negative semaphore blades and a partially open, gray lattice mast are included. The signal changes from red (Hp 0) to green (Hp 1) or red (Hp 0) to green/yellow (Hp 2). Semaphore signals with "Negative Semaphore Blades" were used according to earlier signal regulations at locations with a green or dark background (example: buildings).