Sourcingbay GPS Car Tracker GPS103BSA and Car Alarm Speaker with Real-time Tracking Microphone GPS Vehicle Tracker with real-time tracking as well as SMS and remote control, a Shock sensor, a car alarm siren, and all the latest advanced car security technology in one package. This High-Tech GPS Car Tracker is a Real-Time GPS Tracker with Remote Control, Siren and Shock Sensor. Its convenient control via SMS giving you a full range of Alarm features including fuel to engine cut off makes this GRP the ultimate safety gadget for your car, van, truck, or even your entire vehicle fleet. Additionally, this car GPS tracking device will immediately cut off your vehicles engine whilst in motion if needed. Simply send an SMS message directly to this GPS tracker and it will disarm the gas and battery power, meaning the engine and vehicle will be immediately immobilized until the police or help arrives. Another great extra feature are alerts sent to you via SMS, such as when your vehicle moves from a stationary position or when your car is moving faster than a preset speed. Basically you will know where your vehicle is, where it is likely going, how fast it is going and more, meaning you will have full knowledge and control over your vehicles when you are not in it. With this GPS Vehicle Tracker with Real-Time Tracking and remote Control will ensure if you lose your keys, at least your car will still be safe.