... days,with SOS,overspeed ,ACC,quiver ,low battery and Geo-fence alarm. Model: Portable GPS Tracking System GPS104This product can locate ... according to fixed speed.It alarms when speed is exceeded.*Low batttery and SOS alarm function*Support hidden alarm and ... monitor tracking software), 1 external GPS antenna , 1 external GSM antenna,one 12V relay,1 cable Portable GPS Tracking System with Sleep Mode ...