Acumen OBD Tracker is a wireless device, you just need to plug in your car and it will start working. No wiring required so it will not impact your car warranty. It gives you real time tracking with Great accuracy. Easy installation process, directly insert into car OBD II interface. Supports Power failure alarm, Vibration alarm, over speed alarm. It also support historical data with play back and electric geo fence. Locate and get the position of your vehicle remotely via SMS or GPRS. You can also move this device to one Car to Another Car. This device is not support remotely Engine Cut off Feature. One more thing this device is only for Car. It will not support in any other vehicle. This device is come with Mobile App. You need one SIM card with minimum 500MB data monthly and 200 SMS.