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What the colours mean

Once your tree is set up, it becomes a live board. It uses just two colours, and each one has a plain meaning.

Green: it is reporting

Green means the controller or sensor is answering and its readings keep arriving. Nothing needs to be done. A site where everything is green is a site where everything is being heard.

Red: it has stopped

Red means something that used to report has stopped. The board tells you what has gone quiet and where it is, using the place and the name you gave it, and the photos you attached, so you know exactly where to go.

What red does and does not say

Red tells you that something has gone quiet. It does not, by itself, tell you why. The cause may be a loss of power, a network cable that has come loose, a controller that has been switched off, or a sensor that has been disconnected. It may also be something planned, such as equipment turned off for maintenance.

What to do when something is red

1. Read the place and the name to see what has gone quiet.
2. Look at the photos to recognise the spot.
3. Go to the place and check the simple things first: power, cables, and whether anyone has switched something off.
4. Watch the board. When the equipment is answering again, the line goes back to green.

Colour is never the only signal

Each line also carries a word, so the board can still be read by people who find some colours hard to tell apart.