Made it for a friend. It’s slightly oversized due to the ‘stuff’ inside. Battery powered so track power isn’t needed and a switch to turn it off and on and a clip on the back so it can be mounted to a coupler, ladder grab or whatever. So far the batteries have lasted for 11 days flashing 24 hours a day. Plan on painting it yellow with a black stripe. Seeing if there would be an interest in them for you sinners er, I mean non caboose guys. Cost would be about $15
Terry