... an advanced ,hi-technology and good quality system. How it works?Main features,Tracking functions,- Dual Tracking location covered, ... 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 ( function(){ var ...