The Directed DSM550 SmartStart Pro 4G LTE GPS Module lets you use your smartphone to remote-start your car, locate it, lock or unlock it, and more using the Directed SmartStart app. However, to remote start, your car must already be equipped with a compatible remote start system. SmartStart Pro is optimized for use with the Directed DS4/DS4+ platform and delivers scorching speed with 4G LTE connectivity and futureproof design to ensure support for new features as they are developed. It uses a simplified, 1-piece wiring harness for faster, cleaner installs. A 1-year to 3-year subscription to a SmartStart Secure or GPS Premium service plan is required. For example, Secure features include showing you the car's location and will alert you if it moves from a designated location. Upgrading to the Premium service plan also lets you set up a geo-fence zone or alert you if you enter a forbidden zone. The app itself also displays your car's statuslike locked, armed, running, or door open.