Rated Voltage:12VDC; Output Power:15W/20W/25W; Rated Current:550/1000/1200mA; S.P.L.:105/108/112dB; Tone:1-Tone/6-Tone; Highly intensity shell, light weight, small size, good quality with excellent workmanship and highreliability.Used for alarming,applicable to many situations,such as cars,doors,gates or safeboxes.Enjoy good reputation among customers;