A telematics service in a motor vehicle is provided by a mobile radio link between a telematics controller in the motor vehicle and an external telematics center. The method is implemented via an apparatus that enables connectors to be automatically inserted into mating connectors on a circuit board device under test. The comparators control the charging and discharging time of the capacitor, thereby generating a corresponding pulse width modulation signal to the fan according to the temperature, to adjust the speed of the fan. A write signal is supplied to a memory via a second gate that allows the input signal to pass through only when the output signal from the first latch circuit is 1. The device may compare one or more of the determined one or more characteristics of the device in space to a desired destination or path specified by the user, and provide the user with directional feedback if the determined one or more characteristics of the device in space are consistent with the desired destination or path.