Start here - What you Need and What it Does.

Any switch machines used for automation or route control will still need to be connected to a DCC accessory controller as normal.

1. Block detection is handled by the BD20 current sensor. The two wires from the BD20 go to an AIU.
2. Turnout position feedback of a tortoise switch machine is accomplished by routing the aux contacts of the tortoise to an AIU.
3. An AIU is Auxiliary Input Unit. This is a generic unit that monitors inputs. It watches for inputs to get shorted to ground.
4. The AIU reports the status of the inputs using the NCE cab bus. This sends the data to the NCE command station.
5. The NCE Mini Panel is a routing, automation, and logic controller. Can also control locomotives, all types of DCC accessories, DCC accessory controllers and more. 

The Light-It is a multi-purpose programmable DCC lighting decoder. One Light-It contains three programmable lighting outputs with a complete array of lighting effects. Suitable for signal heads, passenger cars, locomotive lighting, cabooses, structure lighting, and many other uses.

The Illuminator is a Plug and Play multi-purpose programmable DCC lighting decoder. One Illuminator contains three programmable lighting outputs with a complete array of lighting effects. Suitable for signal heads, passenger cars, locomotive lighting, cabooses, structure lighting, and many other uses. Designed to be used with Woodland Scenics Just Plug system!