The ST300A, an advanced model from Suntech, is a highly equipped device with internal antenna adaptation, 1-Wire technology, which can connect up to 3 temperature sensors and an i-Button. It also has an RS232 interface and multiple analog inputs. In addition to the special features mentioned above, this model also has basic functions. Thanks to its installation harness, it can detect door openings, Panic Button, immobilization, lock and unlock doors, etc. Similarly, the ST300A model has Jamming detection alarms, Crane dragging, Anti-Theft, Driving Pattern Analysis, among others.