CARLOCK Anti Theft Car Device - Real Time UK 4G LTE Car GPS Tracker & Car Alarm System Security - OBD & Phone App - Auto Van Vehicles Tracking & Instant Alert of Suspicious BehaviorWORK & SLEEP WITHOUT WORRY CarLock anti theft car device and car alarm monitors and alerts you on your phone when your vehicle is moved, when the engine starts, if unusual vibration or motion is detected & even if the device is disconnected! MONITOR YOUR TEENAGER We love our teens but they can be entirely different people behind the wheel. CarLock car tracker detects harsh acceleration (drag racing), hard breaking & sharp cornering (stunt driving).