How do you want to use the signals? Are you going to actually control the blocks in some way, or are they just "decorative" signals? If you simply want signals with lights that change in some systematic way, you can use simple detectors to switch from green to red for a while, similar to turning on and off a set of crossing lights.
Or, you can connect them to a turnout (or a relay) if you would like to use them as turnout position indicators, typically green for the main line and red for a siding, etc.
For a more complete block wiring system, look at Circuitron and similar manufacturers.
It takes an iron man to play with a toy iron horse.
lyfmartin wrote:How I can use several signal (red and green light or arms), to be operated by block detection devices.
How they are wired is totally dependent on the system chosen.
I have a DCC Bachmann EZ command.
http://www.digitrax.com/menu_detectionsignaling.php
Someone told me that this device do not support this kind of control.
Exist another way to control ?