The LMU-800 high-value tracking unit from CalAmp features a small size, superior GPS performance, an internal 200 mAh back-up battery, ultra low power sleep modes, 3-axis accelerometer for motion sense, and three Inputs/Outputs (I/O). The LMU-800 is a complete vehicle tracking and communications device incorporating next-generation, super-sensitive GPS technology on GSM/GPRS cellular networks for installation in any 12 or 24 volt mobile vehicle. Superior internal antennas for both cellular and GPS eliminate the need for wired antennas and make the LMU-800 mountable virtually anywhere in the vehicle for easy, inexpensive installations. Messages are transported across the GSM/GPRS network using enhanced SMS or UDP messaging providing a reliable communications link between the device and your application servers. The LMU-800 is designed to dramatically reduce cost, power and size while providing excellent field reliability.