You can set up in the Suntech ST300A GPS tracker the following "SMS alerts" for detect: (Jamming, asset-vehicle towing, anti-thief, driving report, panic button, immobilizer), every time that active an alert you received a SMS message in the mobile phone. With ST300A GPS device of Suntech that has integrated 1-Wire interface you can connect to 3 Temperature Sensors and 1 iButton, also has a RS232 interface and multiple digital/analog inputs. Another great integrated function of Suntech ST300A GPS tracker is the "Management Pattern Analysis (DPA)" ideal to control the Driving behaviour by detect: hard braking, hard acceleration, hard cornering, also offer histogram. To improve safety in the GPS Asset tracking, you can configure in the ST300A GPS device of Suntech virtual geofences (up to 20 circulars, 50 polygonal, 500 reference points), every time that mobile asset or vehicle crossing a geofence; you receive in your mobile phone the exact Geo Location of Suntech ST300A GPS Tracker.