... , 1527/2240 study code Working Voltage, 12V (27A 12V dry battery) Control Distance, 100M - Mainframe Power supply, 12 or 24V DC ... - Backup battery, Poly-Li battery, 600mAh 3.7V - Mainframe Dimension, 125x108x26mm 2-way GSM ... ': aBigImageSrc } ); } )(); Two way Car GPS tracker with Window Auto Closer Module ,GPS-1200