Abstract: The invention is directed to a vehicle monitoring system, which determines a possible theft condition by detecting that a vehicle has been displaced while at the same time it has sensed that there has not been a key entry in the ignition and/or the vehicle's motor is not running. The system includes a control module mounted in the vehicle and a service provider server installed at a predetermined location by a service provider. The control module includes a processor, a Global Positioning System receiver or a motion sensor for determining the displacement of the vehicle, a wireless communications unit and an interface for connecting the processor to the vehicle's key entry sensor and motor running sensor. When a possible theft condition is determined, the service provider server will generate a message to alert a security agency.

Abstract: The level detection device has a heat sensitive device, a heat device, and a processor for controlling the operation of measurement. The level detection device is externally mounted to tanks. The level detection device heats the heat sensitive device and monitors the output of the heat sensitive device. The date obtained by the level detection device is transferred to an external device.

Abstract: A tracking system and method employing cellular network control channels. The system, leveraging existing Roamer Record Exchange Systems (RRES), comprises a cellular transceiver installed in a tracking target and a central server for paging the installed cellular transceiver to enter into a tracking mode over a cellular network control channel and collecting tracking mode information provided through RRES to map information such as Cell Site ID and Sector for use as reference points for the tracking of the tracking target. The method, leveraging existing Roamer Record Exchange Systems (RRES), includes the steps of installing a cellular transceiver in a tracking target, and paging the installed cellular transceiver over a cellular network control channel to enter into a tracking mode to identify, from information provided through the RRES, one or more cell sites located near the tracking target so as to enable the tracking of the tracking target.