... AVL03, TZ-AVL05 Specifications: Dimension96mm*65mm*25mmN.W0.24KGExterior Power SupplyDC9V-36VInner Lithium batteryDC 3.7V-4.2VExterior GSM antennaReceive ... /1800/1900 Mhz)GPS chipsuper sensitivity and high accuracyLED3LEDs indicate power, GSM, GPS signal, and trembling status( 2 Changer ... , 2 positivel inputs ), 2 digital outputs, 2 analog inputs auto GPS /GSM/GPRS/AGPS tracker, engine on& off, geo- ...