1.Voltage:DC12/24V 2.Power: 400 w 3.Function:> 8 tones and Microphone Manual button generates a variety of tones, providing hand-free operationCompact and install easilySound Available: Wail-1, Wail-2, Wail-3,Horm-1, Horm-2,Siren, Co-co, Lamp1, Lamp 2, Phasr,Wail-2(6), Mic Auto Siren and Speaker:ESAS-948