... this way providing loud sound as warning signal for car alarm system.Features:* Compatible with International Industry Standard Waterproof ... alarm system* Complete system integration, compatible with GSM,GPS,Car Alarm System* Excellent Quality with factory competitive price* ... :28kgsMEAS :40.5x18x32.5cmPictures Showing:SP-150 Electronic car siren SP-150 electronic car siren,DC 12v,24v,150w ,china