Powerhouse TEP4" Inch 6 Tone High db Car Alarm Replacement Siren

1997 Chevrolet conversion van. Should have 1 chirp lock, 2 chirps unlock, alarm siren. Now rare chirp, no siren. Will this work? 4" 12 volt

If I supply a 12 volt power supply directly to the wires will the siren sound with a hi lo alarm sound ?

Does it make different sounds?

Is this louder than the usual car alarm system