... 900 MHz /1800MHz /1900MHzGPRSClass 12,TCP/IP build in GSM MODULEGPS sensitivity-159dBmGPS positioning accuracy(2D RM)10 mGSM ... alarm2,Vehicle alarm to mobile phone3,Control by mobile phone messages4,oil and line by remote control5,parking time record6 ... comprehensive through national 3E, explosion-proof, CE, ROHS certified2,Dual built-in antenna design, waterproof ,dustproof anti-corrosion and anti ...