The Siren Board

I did a Google search on the Vernon ones absolutely no info on the city's website or anywhere on these. Like I said before there probably not used anymore but since the city is an industrial city and lots of plants with chemicals there's a slim chance they may still be in service. Also Newport Beach in Orange County (which is adjacent to Huntington Beach who has T-128's and 2, 2001's) has a system of three blue t-128s which are tested on the first Friday of every month at a reduced sound rate then the full sound level.

Judging by the photo in the ad, it looks more like 16/18