... 12V 2,Siren has three operation modes ,Triple tamper protection 4,waterproof 1,Outdoor/Indoor siren with strobe2 ... ,Product number: FS-073,CE license4,Siren has three operation modes: siren only, strobe light only, or siren ... feature that allows users to check the siren and strobe lights prior to installation8,Super ... HOT SALE,FS-07,12V outdoor siren with strobe