?Warranty?2 years quality warranty, during usage or install, if need any assistance, please don't hesitate to let us know, thanks. ?Universal Car Alarm?The accepted power supply is 9V-15V, therefore, it can be installed on all 12V cars, a real universal car alarm for all cars. ?Vibration Sensor Alarm?When the vibration sensor siren detect vibration, it will remind 3 times; if detect vibration again within 15 seconds, it will alarm. ?DIY Install Car Alarm?5 minutes to DIY Install: just need connect siren black and red cable to car battery - and +, then press the "lock" key on the remote control, it will be " ARM". Green cable is the antenna, no need connection, just make sure it face up. ?Wireless Car Alarm System? Wireless Car Alarm System: different from the normal car alarm, this system doesn't have main unit box, no need cut original car cables. Won't Destroy Car Engine and Original Circuit.