Signal towers measuring 70 mm:

Signal towers can be put together by piling up to seven modules made of:

1. Up to seven light modules (stationary or flickering), minus one if a sound module is needed.
2. Include a termination-related connection module.
3. If necessary, add mounting attachments.

• Light modules: continuous light and flickering light.
• Sound modules can produce either pulsed or continuous sound.
• Constant light modules with either an LED or a standard BA15d lamp filament (not provided).