The M98097 is a 97dB grommet-mounted back-up alarm. It is SAE J994 compliant and features a single tone at a frequency of 1,250Hz.  It fits a standard 4” grommet and includes Maxxima M50400-B.  The electrical connection is a 5” pigtail with a standard PL-3 plug. It has a rugged reinforced nylon housing, and is backed by a 2-year warranty.