A small high contrast sign to warn people they are being recorded.

There are two versions, one is black and silver only and the other has red letters. You can of course also edit the colors in your slicer to use any color you'd like.

You can scale it in the x and y direction if you need a bigger sign.

I recommend these double sided stickers to stick it to a wall https://s.click.aliexpress.com/e/_c45rO8ir or on amazon https://amzn.to/3QXKXtR they stick really well and leave no residue after removing.