YaYa GPS/GSM/GPRS smartphone APP 2-way car alarm uses the state of the art technology that allows you to control your car with this APP anytime and anywhere in the world without distance limit. You may use the APP to lock/unlock the doors, open the trunk, find your car in a big parking lot, check the car location or start your car engine remotely. And you can know the realtime status of your car with the APP. When the car alarm receives any trigger, you can receive SMS alert on smartphone and yo