you sound like the knowledge guy! Any clue what this thing is? https://www.ebay.com/itm/264655431283?mkcid=1&mkrid=711-53200-19255-0&siteid=0&customid=link&campid=&toolid=20001&mkevt=1
the guy here says he doesnt know exactly what it does and i found one from federal signal, it likes like it has...