Main feature: 1,GPS tracker with waterproofshell 2,build-in shock sensor 3, large capacity battery Product Description: Model: GPS104This ... reset by SMS command & reset button on the device11,Input Power: 12V-24V DC12,GSM/GPS LED indicator13,Authorized number added ... to the authorized numbers when it breaches the district.16,Power supply disconnection alarm.17,Door alarm18,ACC alarm19,Movement alert ...