I own a STORMAlert 1004 , and STORMAlert MA-50 siren. They do actually work, too. Built them both myself. I also own a Federal Model 2, Model 2T, a Mystery Siren, a Federal Model D and an AF Timer. Later this month I have to go pick up my RSH-10 (Thunderbeam) and a Modulator 1004 that was removed be...