I just got the siren today well as it turns out it is not a general detroit siren. It is a federal model s-114. The actual markings on the tag has been rubbed off only the model number that was stamped remained. It does work so I guess that is what is important. Another siren the same model but crhomed went up on ebay after I bought mine for about the same price. That is how I found out that it was really a federal siren. Joe B.