The Safe-T-Alert 2000, 2500 and 3000 back up alarm series from Superior Signals Inc. are available in various models and can be used for anything from light to heavy-duty industrial needs. These alarm series have decibel ratings from 82 dB up to 107 dB. Styles of the alarms range from 12 volts to 80 volts, self and manual adjusting and some models that conform to the SAE J994 types B, C or D. These alarms can be steam cleaned and will operate in rugged environments. Superior Signals Inc.