# XLR Light Signal

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The **XLR Light Signal** makes it possible to light up an LED attached to one of the base boxes with a button attached to the other one. The base boxes are connected with an XLR cable.

The system is built up as follows:

- two base boxes, one at each end, connected with an XLR cable
- one button module, connected to one of the base boxes
- one LED module, connected to the other base box

Each base box can be supplied from a local 12V supply, or via the XLR cable from the other base box,
so only one supply is strictly necessary.

```raw

    *--------*       *------------*                  *------------*       *-----*
    | Button |=======| Base Box 1 |======[XLR]=======| Base Box 2 |=======| LED |
    *--------*       *------------*                  *------------*       *-----*
                           ][                              ][   
                       *--------*                      ..........
                       | Supply |                      :(Supply):
                       *--------*                      ..........

```

## Notizen