Most likely 12v...this will give you the amperage used by the unit at 12 volts roughly ten times the amps needed at 120volts...example 120 volt unit drawing 10amps at 120 volts equals 1200 watts. Take the wattage and divide by 12 volts and you get 100 amps...now it gets a bit sticky...
These adjectives mean conspicuously and usually offensively loud. Vociferous suggests a noisy outcry, as of vehement protest: vociferous complaints.
It's a mellifluous and evocative word to be sure, but for some reason doesn't pop up in lists of English's most splendiferous words. Here's one, which yes includes the euphonious mellifluous, further trumpeting the noteworthy demesne, ethereal, languor, plethora and riparian in its top 100.