Comus g3sb002 grade 3 alarm dual tone high low sounder 110db 12v dc 16 ohm comus g3sb002 a 16 omega dual tone high low sounder for alarm systems the two tones are independently triggered and the strong mylar cone enables the alarm and exit tones to emit 110db and 80db 1m respectively additional features include an anti tamper switch for added security and a weather resistant white polycarbonate housing that allows the speaker to be mounted outside or in harsh environments comus g3sb002 a