... by software/by cell phone ·Over-speed alarm, Low power alarm, Geo-fence alarm ·Roaming feature to save ... AVL05 Specifications: Dimension96mm*65mm*25mmN.W0.24KGExterior Power SupplyDC9V-36VInner Lithium batteryDC 3.7V-4. ... Mhz)GPS chipsuper sensitivity and high accuracyLED3LEDs indicate power, GSM, GPS signal, and trembling status( ... , geo-fence control,over speed&low power alarm, mileage calculation